Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
dang mau » dong mau, dang van, dang su
te sach » toc sach
tai cuu » tai cuc, tai buu, tai cua
sach ky » sac ky, sach y, sach ty
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
dang ma » dang mam, dang mat, tang ma
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa
ve cam » ve cham, ve cac, va cam

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