Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tinh vien » sinh vien, tinh dien, tinh viet
kho tang » cao tang
vien cua » viec cua, dien cua, tien cua
hieu van » hieu va, thien van, lieu va
va tinh » may tinh
nam luc » nang luc, nhan luc, nam thuc
ky tang » ky nang, ky dang, ky trong
tu sanh » tu hanh, tu manh, tu anh
ma hoi » mai hoi, xa hoi, ma hoa
luc va » duc va, tuc va, loc va
tu san » thu san, tu ban, tu can

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