Perhaps you should try some spelling variations:
thien van » thi van
van thanh » ban thanh, van tuan
thanh vi » hanh vi, thanh va, thanh ve
doc sach » hoc sach, toc sach, nuoc sach
lang van » dang van, tang van, hoang van
cua viet » ca viet, hoa viet, cua vat
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
van hoi » van hoa, van hoc, van hoe
cua tre » cua te, cuu tre, cua triet
y lang » o lang, _ lang, tay lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach y lang van hoi. ((hieu ve) or (thien van)) cam xuc van thanh vi ((cua tre) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach y lang van hoi. ((hieu ve) OR (thien van)) cam xuc van thanh vi ((cua tre) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: doc sach y lang van hoi. ((hieu ve) or (thien van)) cam xuc van thanh vi ((cua tre) or (cua viet))*.