Perhaps you should try some spelling variations:
quyen tap » tuyen tap, luyen tap, quyen cap
quyen con » quyen cong, tuyen chon, nguyen con
truc chua » truc chuoi, thuc cua, truc nha
van dung » van dong, xay dung, tin dung
va dung » va duong, vat dung, va ung
ban ve » ban va
ve ly » ve ky, ve li, ve y

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((quyen tap) or (quyen con)) truc chua đe co ban ve ly ((va dung) OR (van dung)) cong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((quyen tap) OR (quyen con)) truc chua đe co ban ve ly ((va dung) OR (van dung)) cong.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((quyen tap) or (quyen con)) truc chua đe co ban ve ly ((va dung) OR (van dung)) cong".
• Adding a wildcard symbol may retrieve word variants: ((quyen tap) or (quyen con)) truc chua đe co ban ve ly ((va dung) OR (van dung)) cong*.