Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
tai cua » thai cua, tai cuc, tri cua
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
xac va » tac va, ac va, bac va
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sanh) or (do sanh)) ky nang xa hoi. hieu va cam ((xac va) or (tuc va)) hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sanh) OR (do sanh)) ky nang xa hoi. hieu va cam ((xac va) OR (tuc va)) hanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((so sanh) or (do sanh)) ky nang xa hoi. hieu va cam ((xac va) or (tuc va)) hanh tai cua tre*.