Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
ban thanh » ban hanh, ban hang
te sach » toc sach
ky dang » ky nang, ky danh
cua tre » cuu tre, cua triet, dua tren
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
cac tuc » cac toc, cac tu, cac tac
tuc ban » thuc ban, truc ban, tu ban
ve cac » va cac, vien cac
ma hoi » mai hoi, ma hoa, me hoi
cua te » cua tu

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 ky dang ((ma hoi) or (xa hoi)). hieu ve cac tuc ban thanh tai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang ((ma hoi) OR (xa hoi)). hieu ve cac tuc ban thanh tai ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: te sach ky dang ((ma hoi) or (xa hoi)). hieu ve cac tuc ban thanh tai ((cua tre) or (cua te))*.