Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
chat huu » pham huu
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
huu ban » huu bang, huu han, cuu ban
tai cua » thai cua, tri cua, dai cua

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) or (cac ky)) nang xa hoi. hieu ve chat huu ban thanh ((tai cua) OR (tai cuc)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (cac ky)) nang xa hoi. hieu ve chat huu ban thanh ((tai cua) OR (tai cuc)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (cac ky)) nang xa hoi. hieu ve chat huu ban thanh ((tai cua) OR (tai cuc)) triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (cac ky)) nang xa hoi. hieu ve chat huu ban thanh ((tai cua) OR (tai cuc)) triet*.