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

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)) cach thuc đe co ((ban vat) or (ben vat)) ly thi dung cong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((quyen tap) OR (quyen cap)) cach thuc đe co ((ban vat) OR (ben vat)) ly thi dung cong.
• Adding a wildcard symbol may retrieve word variants: ((quyen tap) or (quyen cap)) cach thuc đe co ((ban vat) or (ben vat)) ly thi dung cong*.