Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
thai cua » tai cuc, tri cua, dai cua
than cua » nhan cua, ban cua, gian cua
nang xa » nang x, lang xa, nang ma
thuc xa » thuc xay, tuc xa, thuc ha
thuc va » thuc vat, thuc dan, thuc day
su cac » tu cac, su cao, su can

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