The context menu is a greater starting point to generate properly formatted search terms. As it is, however, the user who intends to combine multiple terms (e.g., two lemmas from one verse), must do some cutting and pasting in order to build the search from the context menu. For instance, search this resource for lemma 1 generates that search. Then same for lemma 2, then cut the lemma 2 search, and combine with the lemma 1 search and operators. I find myself doing this quite frequently.
This leads to the suggestion that, in addition to the other search options in the context menu, a new one "Add to search" be implemented, which effectively would do just that: add a new term to an already started search line. Then the user can add the desired operators as needed.