Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, tu cach
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
cuc tre » duc tre, cua tre, cuu tre
te sach » toc sach
ve cac » va cac, vien cac
y nang » ky nang, ly nang, v nang
co dai » co dan, do dai
o hoc » co hoc, mo hoc, so hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (te sach)) y nang ((o hoc) or (co dai)). hieu ve cac xuc van hanh tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) y nang ((o hoc) OR (co dai)). hieu ve cac xuc van hanh tai cuc tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) y nang ((o hoc) or (co dai)). hieu ve cac xuc van hanh tai cuc tre*.