Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
va doanh » van doanh, vay doanh, va danh
cua tre » cua te, cuu tre, cua triet
va cham » va chat, va tham
tai cua » thai cua, tai cuc, tri cua
lang xa » dang xay, lang van
lang ha » long ha
hieu va » lieu va, hieu qua
luc va » duc va, tuc va, loc va
bao ky » ban ky, bac ky, bo ky

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te ((bao ky) OR (cao ky)) ((lang xa) OR (lang ha)) hoi. hieu va cham luc va doanh tai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((bao ky) OR (cao ky)) ((lang xa) or (lang ha)) hoi. hieu va cham luc va doanh tai cua tre~".
• Adding a wildcard symbol may retrieve word variants: te ((bao ky) OR (cao ky)) ((lang xa) or (lang ha)) hoi. hieu va cham luc va doanh tai cua tre*.