Perhaps you should try some spelling variations:
thien van » thi van
lam duoc » nam duoc, luat duoc, lam thuoc
cong cua » cong cu, dong cua, huong cua
te sach » toc sach
ty lang » tay lang, ty hang, tu lang
van lam » van nam
duoc ma » duoc lam
ma hang » mat hang, mua hang, va hang
va cua » va chua, via cua, ca cua

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 xang)) xa hoi. thien van lam duoc ma hang ((va cua) or (cong cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty lang) OR (ty xang)) xa hoi. thien van lam duoc ma hang ((va cua) OR (cong cua)) tre.
• Adding a wildcard symbol may retrieve word variants: te sach ((ty lang) or (ty xang)) xa hoi. thien van lam duoc ma hang ((va cua) or (cong cua)) tre*.