Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cham cuc » cham cuu, pham cuc, pham chuc
su triet » su viet, su tien, ve triet
thanh ve » hanh ve, thanh va, thanh vien
tu sach » thu sach, te sach, tu cach
cuc ban » cua ban, cac ban, cuu ban
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
su sach » so sach, vu sach
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: ((tu sach) OR (su sach)) ty nang xa hoi. hieu ve cham cuc ban thanh ve ((su triet) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ty nang xa hoi. hieu ve cham cuc ban thanh ve ((su triet) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ty nang xa hoi. hieu ve cham cuc ban thanh ve ((su triet) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ty nang xa hoi. hieu ve cham cuc ban thanh ve ((su triet) or (cuu tre))*.