Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
vinh cuu » dinh cuu, sinh cua, dinh cu
hoa lang » hoa dan, hoa van
thuoc va » thuc va, thuoc ma, thuong va
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
va danh » va dinh, va dan, va hanh
van lam » van nam
vi cuu » vi luu
o lang » hoi lang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((o lang) or (hoa lang)) xa hoi. hieu van lam thuoc va danh ((vi cuu) or (vinh cuu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((o lang) OR (hoa lang)) xa hoi. hieu van lam thuoc va danh ((vi cuu) OR (vinh cuu)) tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((o lang) or (hoa lang)) xa hoi. hieu van lam thuoc va danh ((vi cuu) or (vinh cuu)) tre*.