Perhaps you should try some spelling variations:
tinh vien » tinh dien, tinh viet, tinh hien
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
sang ky » sang kyo, dang ky, tang ky
nang xa » nang x, lang xa, nang ma
nam luc » nang luc, nhan luc, nam thuc
san ky » van ky, dan ky, ban 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 ((san ky) OR (sang ky)) nang xa hoi. hieu van nam luc va ((tinh vien) or (sinh vien)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((san ky) OR (sang ky)) nang xa hoi. hieu van nam luc va ((tinh vien) OR (sinh vien)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((san ky) OR (sang ky)) nang xa hoi. hieu van nam luc va ((tinh vien) or (sinh vien)) cua triet".
• Adding a wildcard symbol may retrieve word variants: tu ((san ky) OR (sang ky)) nang xa hoi. hieu van nam luc va ((tinh vien) or (sinh vien)) cua triet*.