Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
tuong quan » truong quan, thong quan, cuong quan
luong quan » thong quan, duong qua
dung van » duong van, dung va, dang van
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: theo chieu xanh - manh ((tuong quan) or (luong quan)) ung dung van quan cua~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - manh ((tuong quan) OR (luong quan)) ung dung van quan cua*.