Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
dang mat » dang vat, dang mau, dung mat
hanh tai » hang tai, han tai, hinh tai
tu sach » thu sach, su sach, te sach
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
sach ky » sac ky, sach y, sach ty
va tham » van tham, va cham, va thanh
hieu va » lieu va, hieu qua
mat hoi » mai hoi, sat hoi, mat troi
ky dang » ky nang, ky danh
tham o » tham do, cham o, tam o
o va » do va, so va, co va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky dang mat hoi. hieu va tham o va ((hanh tai) or (thanh tai)) ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang mat hoi. hieu va tham o va ((hanh tai) OR (thanh tai)) ((cuu tre) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang mat hoi. hieu va tham o va ((hanh tai) or (thanh tai)) ((cuu tre) or (cua tre))*.