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