Perhaps you should try some spelling variations:
hanh cong » thanh cong, hang cong, hanh dong
hieu vien » hieu hien, hieu viec, thieu nien
danh cong » dang cong, anh cong, dinh cong
vien cac » vien bach, vien dai, vien da
nang xa » nang x, lang xa, nang ma
cac luc » cau luc, coc luc, cac nuoc
cua cu » cua chu, cua cau, cua co
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
luc va » duc va, tuc va, loc va
cua su » qua su

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

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