Perhaps you should try some spelling variations:
cay thuoc » cua thuoc, nam thuoc, va thuoc
hieu van » hieu va, thien van, lieu va
thanh va » thanh van, hanh va, thanh ha
thuoc va » thuc va, thuoc ma, thuong va
te sach » toc sach
van cay » van cau, van bay, van ca
ty hang » ly hang, ty xang, thi hang
ty lang » tay lang, ty xang, tu lang
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ty lang) or (ty hang)) xa hoi. hieu van cay thuoc va ((hanh vi) or (thanh va)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty lang) OR (ty hang)) xa hoi. hieu van cay thuoc va ((hanh vi) OR (thanh va)) cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ((ty lang) or (ty hang)) xa hoi. hieu van cay thuoc va ((hanh vi) or (thanh va)) cua te*.