Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dinh viec » dinh viet, sinh viec, sinh vien
hieu van » hieu va, thien van, lieu va
va dinh » van dinh, va kinh, va tinh
nam luc » nang luc, nhan luc, nam thuc
nang ma » tang ma, sang ma, nang cao
su sach » so sach, vu sach
tu sach » thu sach, te sach, tu cach
ma hoi » mai hoi, xa hoi, ma hoa
luc va » duc va, tuc va, loc va
tu sac » tu cac, tu san, tu bac

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