Perhaps you should try some spelling variations:
thuoc dung » hoc dung, thuy dung
huyen tam » huyen nam, huyen dam, chuyen tay
quyen cap » quyen cach, huyen cao, quyen con
cac khoi » cac thoi, cac khoan, cach thoi
thu dang » thu hang, thu bang, thu dong
ban ve » ban va
ve ky » va ky, ke ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((huyen tam) or (quyen cap)) cac khoi đe co ban ve ky ((thu dang) or (thuoc dung)) cong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((huyen tam) OR (quyen cap)) cac khoi đe co ban ve ky ((thu dang) OR (thuoc dung)) cong.
• Adding a wildcard symbol may retrieve word variants: ((huyen tam) or (quyen cap)) cac khoi đe co ban ve ky ((thu dang) or (thuoc dung)) cong*.