Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
hanh hai » thanh hai, nhanh hai, hanh tai
hang hai » hoang hai, hang tai, thanh hai
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
su dai » sau dai, si dai, su tai
dai ky » dan ky, dai ly, sai ky
xuc va » duc va, tuc va, luc va
cua tu » cua tuc, cua su, cua cu

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

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