Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hanh lam » thanh lap, hanh kem, hanh va
lam cua » nam cua, lam chat
sanh ty » sach ty, canh tay
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
va pham » van pham, va phat, va phap
ma hoi » mai hoi, xa hoi, ma hoa
huu va » tuu va
cuu va » cuu van, cuu ve
anh ta » anh tu, anh va, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((sanh ty) or (anh ta)) nang ma hoi. hieu va pham ((huu va) OR (cuu va)) hanh lam cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sanh ty) OR (anh ta)) nang ma hoi. hieu va pham ((huu va) OR (cuu va)) hanh lam cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sanh ty) or (anh ta)) nang ma hoi. hieu va pham ((huu va) OR (cuu va)) hanh lam cua viet".
• Adding a wildcard symbol may retrieve word variants: so ((sanh ty) or (anh ta)) nang ma hoi. hieu va pham ((huu va) OR (cuu va)) hanh lam cua viet*.