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