Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
thanh va » thanh van, thanh ha, thanh ve
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va tham » van tham, va cham, va thanh
thuc va » thuc vat, thuc dan, thuc day
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet

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 ky nang xa hoi. lieu va tham thuc va ((thanh va) or (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. lieu va tham thuc va ((thanh va) OR (hanh va)) cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. lieu va tham thuc va ((thanh va) or (hanh va)) cua tre*.