Perhaps you should try some spelling variations:
sach truc » cach thuc, sach tren, sach thu
truc nang » truc nano, tru nang, truc trang
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
hanh tai » thanh tai, hang tai, han tai
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cac toc » cac toi, cac nuoc, cac thoi
toc van » hoc van, toc san, tac van
cuu tre » cua tre, cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach truc nang xa hoi. hieu va cac toc van hanh tai ((cuu tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach truc nang xa hoi. hieu va cac toc van hanh tai ((cuu tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: toc sach truc nang xa hoi. hieu va cac toc van hanh tai ((cuu tre) or (cua triet))*.