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