Perhaps you should try some spelling variations:
ngan luc » nhan luc, nguon luc, nganh suc
lang xa » lang ha, dang xay, lang van
hieu tu » chieu tu, hieu tuc, hien tu
tu ngan » vu ngan, tu ngay, te ngan
cua tre » cua te, cuu tre, cua triet
cai ky » cac ky, cam ky, sai ky
va dan » ca dan, va dao, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((cai ky) or (cao ky)) lang xa hoi. hieu tu ngan luc ((va dan) or (gia dinh)) dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((cai ky) OR (cao ky)) lang xa hoi. hieu tu ngan luc ((va dan) OR (gia dinh)) dai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((cai ky) or (cao ky)) lang xa hoi. hieu tu ngan luc ((va dan) or (gia dinh)) dai cua tre*.