Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
hieu ve » hieu va, hieu van
tai cua » thai cua, tai cuc, tri cua
vuc van » duc van, luc van, thuc van
cac vuc » cac nuoc, cac vung, cac cuoc
cua tre » cua te, cuu tre, cua triet
nang ho » nang hoc, nang co, tang ho
ve cac » va cac, vien cac
nang o » nang co, nang ro, nang x
tu san » thu san, tu ban, tu can
tu sac » tu sach, tu cac, tu bac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu san)) ky ((nang o) OR (nang ho)) lai. hieu ve cac vuc van hanh tai cua tre~.
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu san)) ky ((nang o) or (nang ho)) lai. hieu ve cac vuc van hanh tai cua tre*.