Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tinh vien » sinh vien, tinh dien, tinh viet
vien cua » viec cua, dien cua, tien cua
hieu van » thien van, lieu va, hieu ve
nam xuc » cam xuc, nam xua, nam thuc
va tinh » may tinh
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
xuc va » duc va, tuc va, luc va
sac ky » cac ky

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