Perhaps you should try some spelling variations:
vat thanh » dat thanh, gat thanh, tat thanh
hoc sach » hoc sinh, hoc cac, hoc anh
cac thuc » cach thuc, cac thu, can thuc
thanh va » thanh van, hanh va, thanh ha
ve triet » va trien, su triet
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
su tien » su kien, su hien, tu tieng

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ky nang xa hoi. lieu va cac thuc vat thanh va ((su tien) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky nang xa hoi. lieu va cac thuc vat thanh va ((su tien) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: hoc sach ky nang xa hoi. lieu va cac thuc vat thanh va ((su tien) or (ve triet))*.