Perhaps you should try some spelling variations:
cam truc » cau truc, nam truc, lam truoc
cua viet » ca viet, hoa viet, cua vat
su sach » so sach
vu sach » vu bach, vu khach
nang xa » nang x, lang xa, nang ma
qua cam » qua cham, qua cac, qua ca
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (vu sach)) y nang xa hoi. hieu qua cam truc va hanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) y nang xa hoi. hieu qua cam truc va hanh vi cua viet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) y nang xa hoi. hieu qua cam truc va hanh vi cua viet*.