Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
nhung cong » dung cong, thong cong, hang cong
canh manh » lanh manh, canh tranh, cach mang
cua nhung » va nhung
manh cua » doanh cua, ban cua
tap toan » tap doan, tap quan, bai toan
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: ((theo chieu) or (doi chi)) xanh - canh manh cua nhung cong ((tan tran) or (tap toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (doi chi)) xanh - canh manh cua nhung cong ((tan tran) OR (tap toan)) cau.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doi chi)) xanh - canh manh cua nhung cong ((tan tran) or (tap toan)) cau*.