Perhaps you should try some spelling variations:
san viet » gian viet, anh viet
cham xuc » cam xuc, chat xuc, cham soc
va viet » hoa viet, mai viet, dao viet
va luan » vay luan, van luan, va quan
hieu tu » chieu tu, hieu tuc, hien tu
tu sach » thu sach, su sach, tu cach
nang xa » nang x, lang xa, nang ma
te sach » toc sach
tu cham » toc cham, thi cham
xuc va » duc va, tuc va, luc va

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: ((tu sach) OR (te sach)) ky nang xa hoi. hieu tu cham xuc va luan van ((va viet) OR (san viet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky nang xa hoi. hieu tu cham xuc va luan van ((va viet) OR (san viet))~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky nang xa hoi. hieu tu cham xuc va luan van ((va viet) OR (san viet))*.