Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
van hanh » van thanh, ban hanh, van anh
ky tang » ky dang, kho tang, ky trong
hieu ve » hieu van
hieu va » lieu va, hieu qua
luc van » luoc van, luu van, duc van
cuu tre » cua tre, cau tren, cau treo
tu sac » tu sach, tu cac, tu san
vi cuu » vi luu, vinh cuu

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) or (ky tang)) xa hoi. ((hieu ve) OR (hieu va)) cham luc van hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky nang) OR (ky tang)) xa hoi. ((hieu ve) OR (hieu va)) cham luc van hanh vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ((ky nang) or (ky tang)) xa hoi. ((hieu ve) OR (hieu va)) cham luc van hanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky nang) or (ky tang)) xa hoi. ((hieu ve) OR (hieu va)) cham luc van hanh vi cuu tre*.