Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
trong van » trong cac
cau treo » cau theo, cau tren, cau triet
lang van » dang van, tang van, hoang van
cua viet » ca viet, hoa viet, cua vat
hieu van » hieu va, thien van, lieu va
thuoc va » thuc va, thuoc ma, thuong va
va hanh » van hanh, va thanh, va danh
vu sach » vu bach, su sach, vu khach
van lam » van nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y ((lang van) or (trong van)) hoi. hieu van lam thuoc va hanh vi ((cua viet) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y ((lang van) OR (trong van)) hoi. hieu van lam thuoc va hanh vi ((cua viet) OR (cau treo)).
• Adding a wildcard symbol may retrieve word variants: vu sach y ((lang van) or (trong van)) hoi. hieu van lam thuoc va hanh vi ((cua viet) or (cau treo))*.