Perhaps you should try some spelling variations:
thanh tra » thanh toan, thanh hoa
te sach » toc sach
tra cua » trau cua, trua cua, tra cuu
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
ty danh » ty doanh, ty anh, ky danh
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa
ma hoi » mai hoi, ma hoa, me hoi
ve cac » va cac, vien cac

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 danh ((ma hoi) or (xa hoi)). hieu ve cac ((luc va) OR (tuc va)) thanh tra cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty danh ((ma hoi) OR (xa hoi)). hieu ve cac ((luc va) OR (tuc va)) thanh tra cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty danh ((ma hoi) or (xa hoi)). hieu ve cac ((luc va) OR (tuc va)) thanh tra cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ty danh ((ma hoi) or (xa hoi)). hieu ve cac ((luc va) OR (tuc va)) thanh tra cua tre*.