Perhaps you should try some spelling variations:
quyen tap » tuyen tap, luyen tap, huyen tam
quyen cap » quyen cach, huyen cao, quyen con
dung cong » dung trong
bang vat » bang va, dang vat, cang vat
cac thu » cach thuc, cac thoi
co bang » cao bang, con bang, co ban
ly thi » ly thoi, le thi, ly thu

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 cap)) cac thu đe co bang vat ((ly thi) or (ly tai)) dung cong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((quyen tap) OR (quyen cap)) cac thu đe co bang vat ((ly thi) OR (ly tai)) dung cong.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((quyen tap) OR (quyen cap)) cac thu đe co bang vat ((ly thi) or (ly tai)) dung cong".
• Adding a wildcard symbol may retrieve word variants: ((quyen tap) OR (quyen cap)) cac thu đe co bang vat ((ly thi) or (ly tai)) dung cong*.