Perhaps you should try some spelling variations:
trung cong » truong cong, trong cong, trung uong
mot chieu » doi chieu
canh manh » lanh manh, canh tranh, cach mang
cua trung » cua truong, xuan trung, cua nhung
van thanh » ban thanh, van tuan
ho chieu » theo chieu, hoc thieu, doi chieu
manh cua » doanh cua, ban cua
bai toan » bai tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (mot chieu)) xanh - canh manh cua trung cong ((bai toan) or (van thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (mot chieu)) xanh - canh manh cua trung cong ((bai toan) OR (van thanh)) cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (mot chieu)) xanh - canh manh cua trung cong ((bai toan) or (van thanh)) cau*.