Perhaps you should try some spelling variations:
nhanh tai » nhanh thai, nhan tai, thanh tai
hanh tai » thanh tai, hang tai, han tai
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
cua tre » cua te, cuu tre, cua triet
dai hoi » dai hoc, dai moi
dai hai » dai han, dai tai, dai thao
hieu ve » hieu va, hieu van
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang ((dai hoi) or (dai hai)). hieu ve cac nuoc va ((hanh tai) or (nhanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang ((dai hoi) OR (dai hai)). hieu ve cac nuoc va ((hanh tai) OR (nhanh tai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: su sac ky nang ((dai hoi) or (dai hai)). hieu ve cac nuoc va ((hanh tai) or (nhanh tai)) cua tre*.