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
bang vat » bang va, dang vat, cang vat
ban vat » ben vat, ban va, van vat
te dung » tieu dung, tien dung, tin dung

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 (bang vat)) y te 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 (bang vat)) y te dung cong.
• Adding a wildcard symbol may retrieve word variants: ((quyen tap) or (quyen cap)) cach thuc đe co ((ban vat) or (bang vat)) y te dung cong*.