Perhaps you should try some spelling variations:
thi nang » ki nang, thi hanh
hang vai » hang va, hang tai, hang hai
thi cong » tai cong, thien cong
ban hang » ngan hang
hieu van » hieu va, thien van, lieu va
te sach » toc sach
luc ban » duc ban, cuc ban, luc bat
vai cua » dai cua, hai cua, lai cua
hieu ve » hieu va
cac luc » cau luc, coc luc, cac nuoc
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 ve) OR (hieu van)) cac luc ban hang vai 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 ve) OR (hieu van)) cac luc ban hang vai 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 ve) OR (hieu van)) cac luc ban hang vai cua cu".
• Adding a wildcard symbol may retrieve word variants: te sach ((thi nang) or (thi cong)) xa hoi. ((hieu ve) OR (hieu van)) cac luc ban hang vai cua cu*.