Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hieu van » hieu va, thien van, lieu va
van tham » van thanh, van tuan, van chat
danh vi » dinh vi, danh di, danh va
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
tham du » thap du, tham do, pham duc
dan ky » van ky
tu dan » tuc dan, tu ban, cu dan
du va » dau va, tu va, su va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu dan ky nang xa hoi. hieu van tham du va ((danh vi) OR (hanh vi)) ((cua tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu dan ky nang xa hoi. hieu van tham du va ((danh vi) OR (hanh vi)) ((cua tre) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu dan ky nang xa hoi. hieu van tham du va ((danh vi) OR (hanh vi)) ((cua tre) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: tu dan ky nang xa hoi. hieu van tham du va ((danh vi) OR (hanh vi)) ((cua tre) or (su triet))*.