Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
te sach » toc sach
cuc tre » duc tre, cuu tre, cuc thue
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
dang ma » dang mau, dang mam, dang mat
ky dang » ky nang, ky danh
loc va » hoc va
luc va » duc va, tuc va

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 hoa. hieu ve cham ((luc va) OR (loc va)) thanh tai ((cuc tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang ma hoa. hieu ve cham ((luc va) OR (loc va)) thanh tai ((cuc tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky dang ma hoa. hieu ve cham ((luc va) OR (loc va)) thanh tai ((cuc tre) or (cua tre))".
• Adding a wildcard symbol may retrieve word variants: te sach ky dang ma hoa. hieu ve cham ((luc va) OR (loc va)) thanh tai ((cuc tre) or (cua tre))*.