Perhaps you should try some spelling variations:
doanh chien » doan thien, hoach chien, khanh chien
nuoc sach » nguoi sach, cuoc cach, cuon sach
tham thuc » nham thuc, pham thuc, tam thuc
chien cau » chien dau, hien cau, khien cau
va doanh » van doanh, vay doanh, va danh
hoc sach » hoc sinh, hoc cac, hoc anh
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
ty nang » ky nang, ty xang, ty hang
thuc va » thuc vat, thuc dan, thuc day
cau tra » ca tra, cau ra, cau truc
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((nuoc sach) or (hoc sach)) ty nang ma hoi. hieu va tham thuc va doanh chien cau tra~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nuoc sach) OR (hoc sach)) ty nang ma hoi. hieu va tham thuc va doanh chien cau tra.
• Adding a wildcard symbol may retrieve word variants: ((nuoc sach) or (hoc sach)) ty nang ma hoi. hieu va tham thuc va doanh chien cau tra*.