Perhaps you should try some spelling variations:
viet hung » viet huong, viet trung
viet dung » viet huong, viet trung
sach ty » sach tu, sach thu, xach tay
nang xa » nang x, lang xa, nang ma
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
qua ca » qua cac, qua cua, qua cai
ca xuc » cam xuc, chat xuc

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 ty) or (sach y)) nang xa hoi. hieu qua ca xuc ((viet dung) or (viet hung)) doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach y)) nang xa hoi. hieu qua ca xuc ((viet dung) OR (viet hung)) doi cua tre.
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) or (sach y)) nang xa hoi. hieu qua ca xuc ((viet dung) or (viet hung)) doi cua tre*.