Perhaps you should try some spelling variations:
cua trung » cua truong, xuan trung, cua nhung
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
chi xanh » chi anh, chi danh, chi hanh
qua dung » quang dung, su dung, qua song
toan cao » toan ban, toan tap
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi xanh - canh tranh ((cua trung) or (qua dung)) cong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - canh tranh ((cua trung) OR (qua dung)) cong manh toan cao*.