Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
va thanh » gia thanh, ban thanh, le thanh
nam thuc » nam thuoc, am thuc, nam thu
cua tre » cua te, cuu tre, cua triet
va tinh » may tinh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ve nam » he nam, va nam, le nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang xa hoi. hieu ve nam thuc ((va thanh) or (va tinh)) hai ((cua tre) or (cau triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu ve nam thuc ((va thanh) OR (va tinh)) hai ((cua tre) OR (cau triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu ve nam thuc ((va thanh) or (va tinh)) hai ((cua tre) or (cau triet))*.