Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
nang xa » lang xa, nang ma, mang xa
hieu vu » hieu va, hieu ve, hieu su
van anh » van thanh, tuan anh, van minh
cua tre » cua te, cuu tre, cua triet
te sai » te tai, te bai, te lai
sai ky » sac ky
anh vi » hanh vi, anh va, anh ve
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sai ky ((nang xa) or (nang x)) hoi. hieu vu ((cham luc) or (nang luc)) van anh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky ((nang xa) OR (nang x)) hoi. hieu vu ((cham luc) OR (nang luc)) van anh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sai ky ((nang xa) or (nang x)) hoi. hieu vu ((cham luc) or (nang luc)) van anh vi cua tre*.