Perhaps you should try some spelling variations:
tinh vien » tinh dien, tinh viet, tinh hien
cua viet » ca viet, hoa viet, cua vat
nhan luc » nang luc
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
nam luc » nang luc, nam thuc, nam duoc
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa

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 ma hoi. hieu va ((nam luc) or (nhan luc)) va ((tinh vien) OR (sinh vien)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ma hoi. hieu va ((nam luc) OR (nhan luc)) va ((tinh vien) OR (sinh vien)) cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ma hoi. hieu va ((nam luc) or (nhan luc)) va ((tinh vien) OR (sinh vien)) cua viet".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ma hoi. hieu va ((nam luc) or (nhan luc)) va ((tinh vien) OR (sinh vien)) cua viet*.