Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
dang mat » dang vat, dang mau, dung mat
cuu tre » cua tre, cau tren, cau treo
tai cuu » tai cuc, tai buu, tai cua
hieu ve » hieu va, hieu van
dang ma » dang mau, dang mam, tang ma
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam
luc va » tuc va, loc va
te sac » te sach, te cac, te san

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky ((dang ma) or (dang mat)) hoi. hieu ve cam ((luc va) or (duc va)) thanh tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((dang ma) OR (dang mat)) hoi. hieu ve cam ((luc va) OR (duc va)) thanh tai cuu tre.
• Adding a wildcard symbol may retrieve word variants: te sac ky ((dang ma) or (dang mat)) hoi. hieu ve cam ((luc va) or (duc va)) thanh tai cuu tre*.