Perhaps you should try some spelling variations:
viec chat » viec cua, viec cho, ve chat
hieu viec » nhieu viec, hieu ve, sieu viet
chat xuc » chat huu, cam xuc, chao xu
xuc tuan » duc thuan, quoc tuan, xuan tuan
sach ky » sach y, sach ty, sach kem
anh tai » hanh tai, anh thai, vanh tai
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
o hoi » co hoi, o hoc, o hai

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 ky) OR (sac ky)) nang ((o hoi) or (co hoc)). hieu viec chat xuc tuan anh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ky) OR (sac ky)) nang ((o hoi) OR (co hoc)). hieu viec chat xuc tuan anh tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ky) OR (sac ky)) nang ((o hoi) or (co hoc)). hieu viec chat xuc tuan anh tai cua tre".
• Adding a wildcard symbol may retrieve word variants: su ((sach ky) OR (sac ky)) nang ((o hoi) or (co hoc)). hieu viec chat xuc tuan anh tai cua tre*.