Perhaps you should try some spelling variations:
tinh viec » tinh viet, dinh viec, sinh viec
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
nam luc » nang luc, nhan luc, nam thuc
va tinh » may tinh
viec va » vien va, viec cua, viec lam
tu sac » tu cac, tu san, tu bac
ma hoi » mai hoi, xa hoi, me hoi
luc va » duc va, tuc va, loc va
thiet » thieu

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) or (ma hoa)). hieu van nam luc va tinh viec va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu sach)) ky nang ((ma hoi) OR (ma hoa)). hieu van nam luc va tinh viec va thiet.
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu sach)) ky nang ((ma hoi) or (ma hoa)). hieu van nam luc va tinh viec va thiet*.