Perhaps you should try some spelling variations:
nhanh thi » nhanh thai, nhanh thuc, nhan tai
van nhanh » van thanh, van hanh, van khanh
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
cua tre » cua te, cuu tre, cua triet
thi cua » thai cua, thi cuc, tri cua
cac xuc » cam xuc, chat xuc, cac cuoc
hieu ve » hieu va, hieu van
sac ky » cac ky, sai ky
co hoi » co hoc, co loi
tu sac » tu sach, tu cac, tu san
o hoi » o hoc, o hai, o hoa

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

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