Perhaps you should try some spelling variations:
quyen cach » quyen sach, quyen anh
quyen cap » huyen cao, quyen con, quyen cua
thai cong » tai cong, thi cong, thanh cong
cong cong » cong dong, trong cong, dung cong
cac thu » cach thuc, cac thoi
ban vat » bang vat, ben vat, ban va
vat y » vat ly, vat _

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((quyen cap) OR (quyen cach))) or (tuyen tap)) cac thu đe co ban vat y thai cong cong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((quyen cap) OR (quyen cach))) OR (tuyen tap)) cac thu đe co ban vat y thai cong cong.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((quyen cap) OR (quyen cach))) or (tuyen tap)) cac thu đe co ban vat y thai cong cong".
• Adding a wildcard symbol may retrieve word variants: ((((quyen cap) OR (quyen cach))) or (tuyen tap)) cac thu đe co ban vat y thai cong cong*.