Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec hoc » viec doc, viec khoa, viec nhom
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
va triet » va thiet, va trien, ve triet
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
ty nang » ky nang, ty xang, ty hang
x hoi » xa hoi, o hoi, x ho
vi va » vi van, vai va, vu va
nuoc » quoc, duoc, ngoc

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (su sach)) ty nang x hoi. hieu viec hoc nuoc va thanh vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ty nang x hoi. hieu viec hoc nuoc va thanh vi va triet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ty nang x hoi. hieu viec hoc nuoc va thanh vi va triet*.