Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
thi nang » ki nang, thi hanh
ban hanh » ban hang
thi cong » tai cong, thien cong
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
te sach » toc sach
cac luc » cau luc, coc luc, cac cuoc
vi cua » vai cua, di cua
cua cu » cua chu, cua cau, cua su

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

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