Perhaps you should try some spelling variations:
van thuc » va thuc, dan thuc, van thu
thuc dan » thuc hanh, hoc dan, thuc vat
thanh vi » thanh va, thanh ve, nhanh vi
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
ca viet » va viet, co viet, hoa viet
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: so sach ky nang x hoi. lieu va van thuc dan ((thanh vi) or (hanh vi)) ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang x hoi. lieu va van thuc dan ((thanh vi) OR (hanh vi)) ca viet.
• Adding a wildcard symbol may retrieve word variants: so sach ky nang x hoi. lieu va van thuc dan ((thanh vi) or (hanh vi)) ca viet*.