Perhaps you should try some spelling variations:
tinh vien » sinh vien, tinh dien, tinh viet
nang cau » nang cao, hang cau, nang dau
hieu van » hieu va, thien van, hieu ve
va triet » va thiet, va trien, ve triet
nam luc » nang luc, nhan luc, nam thuc
va tinh » may tinh
vien va » dien va, vien da, tien va
sac ky » cac ky
luc va » duc va, tuc va, loc va

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