Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
ban hanh » ban hang
van hanh » van thanh, van anh, van ban
cua tre » cua te, cuu tre, cua triet
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
nang xa » nang x, lang xa, nang ma
sac ky » cac ky
di cua » dai cua, doi cua, de 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) or (sac ky)) nang xa hoi. hieu vu cham luc ((van hanh) or (ban hanh)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sai ky) OR (sac ky)) nang xa hoi. hieu vu cham luc ((van hanh) OR (ban hanh)) di cua tre.
• Adding a wildcard symbol may retrieve word variants: te ((sai ky) or (sac ky)) nang xa hoi. hieu vu cham luc ((van hanh) or (ban hanh)) di cua tre*.