Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
thanh ve » hanh ve, thanh va, thanh vien
thanh vi » hanh vi, thanh va, nhanh vi
duc ban » duc tan, duc van, dua ban
su sach » vu sach
hieu ve » hieu va, hieu van
ty nang » ky nang, ty xang, ty hang
so sach » so sanh, bo sach, co sach
ve pham » vi pham, v pham, ve phan
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sach)) ty nang x hoi. hieu ve pham duc ban ((thanh vi) or (thanh ve)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ty nang x hoi. hieu ve pham duc ban ((thanh vi) OR (thanh ve)) cua viet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ty nang x hoi. hieu ve pham duc ban ((thanh vi) or (thanh ve)) cua viet*.