Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van chat » cao chat
chat huu » pham huu
ban hanh » ban hang
nang xa » nang x, lang xa, nang ma
va danh » va dinh, va dan, va hanh
cua tre » cuu tre, cua triet, dua tren
su cac » tu cac, su cao, su can
cua te » cua tu

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 van chat huu ((ban hanh) or (va danh)) than ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cac ky nang xa hoi. hieu van chat huu ((ban hanh) OR (va danh)) than ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cac ky nang xa hoi. hieu van chat huu ((ban hanh) or (va danh)) than ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: su cac ky nang xa hoi. hieu van chat huu ((ban hanh) or (va danh)) than ((cua tre) OR (cua te))*.