Perhaps you should try some spelling variations:
ban thanh » ban hang
ban hanh » ban hang
cua viet » ca viet, hoa viet, cua dieu
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
bao luc » bao thuc
su cac » tu cac, su cao, su can
va bao » va bai

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cac ky nang xa hoi. hieu va bao luc ((ban thanh) or (ban hanh)) doi ((cua viet) OR (cua vat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cac ky nang xa hoi. hieu va bao luc ((ban thanh) OR (ban hanh)) doi ((cua viet) OR (cua vat)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cac ky nang xa hoi. hieu va bao luc ((ban thanh) or (ban hanh)) doi ((cua viet) OR (cua vat))".
• Adding a wildcard symbol may retrieve word variants: su cac ky nang xa hoi. hieu va bao luc ((ban thanh) or (ban hanh)) doi ((cua viet) OR (cua vat))*.