Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
doc sach » hoc sach, toc sach, nuoc sach
hanh lam » thanh lap, hanh va, dinh lam
hieu thi » sieu thi, hieu chi, hiep thi
thi pham » thi phap, toi pham, thi cham
cua tre » cua te, cua triet, dua tren
sach ky » sac ky, sach y, sach ty
thuc va » thuc vat, thuc dan, thuc day
nang xa » nang x, lang xa, nang ma
cuu tre » cau tren, cau treo

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach ky nang xa hoi. hieu thi pham thuc va ((hanh lam) OR (hanh kem)) ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc sach ky nang xa hoi. hieu thi pham thuc va ((hanh lam) or (hanh kem)) ((cua tre) OR (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: doc sach ky nang xa hoi. hieu thi pham thuc va ((hanh lam) or (hanh kem)) ((cua tre) OR (cuu tre))*.