Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
thanh va » thanh van, hanh va, thanh ha
dau tren » dau tien, dat tren, dau tieng
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty lang » tay lang, ty xang, ty hang
van hoi » van hoa, van hoc, van hoe
duc gia » quoc gia
ve cao » va cao, ve cac, ve co
ve bao » te bao, va bao
va dau » va dao

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 van hoi. hieu ((ve cao) or (ve bao)) duc gia thanh va dau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty lang van hoi. hieu ((ve cao) OR (ve bao)) duc gia thanh va dau tren.
• Adding a wildcard symbol may retrieve word variants: te sach ty lang van hoi. hieu ((ve cao) or (ve bao)) duc gia thanh va dau tren*.