Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
cuc tre » duc tre, cua tre, cuu tre
xuc van » duc van, luc van, xuc ban
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
tu san » thu san, tu can, vu san
tu ban » thu ban, te ban
o hoi » co hoi, o hoc, o hoa
o hai » co hai, so hai, o lai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu san) OR (tu ban)) ky nang ((o hoi) or (o hai)). hieu ve cac xuc van hanh tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu san) OR (tu ban)) ky nang ((o hoi) OR (o hai)). hieu ve cac xuc van hanh tai cuc tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu san) OR (tu ban)) ky nang ((o hoi) or (o hai)). hieu ve cac xuc van hanh tai cuc tre".
• Adding a wildcard symbol may retrieve word variants: ((tu san) OR (tu ban)) ky nang ((o hoi) or (o hai)). hieu ve cac xuc van hanh tai cuc tre*.