Perhaps you should try some spelling variations:
thuoc trong » thuc trong, hoc trong, thuat trong
luan thuoc » luan thuc, luong thuoc, cua thuoc
trong van » trong cac
doc hieu » hoc thieu, hoc hien
anh dung » anh dong, anh huong, sach dung
van quan » van ban
quan cua » quan luan, ban cua, gian cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (toc thieu)) manh - anh dung luan thuoc trong van quan cua~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) manh - anh dung luan thuoc trong van quan cua*.