Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
danh vai » danh sai, danh va, doanh van
vai cua » dai cua, hai cua, lai cua
van cam » van nam, van lam, van cau
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty lang » tay lang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
xac va » tac va, ac va, bac va
ha hoi » hoa hoi, ha noi, va hoi

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 ((ha hoi) OR (xa hoi)). hieu van cam ((xac va) or (duc va)) danh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty lang ((ha hoi) OR (xa hoi)). hieu van cam ((xac va) OR (duc va)) danh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty lang ((ha hoi) OR (xa hoi)). hieu van cam ((xac va) or (duc va)) danh vai cua tre*".