Perhaps you should try some spelling variations:
hang cong » dang cong, hang nong, bang cong
cac tinh » dac tinh, cuu tinh, ban tinh
tranh va » tranh van, trang va, trinh va
van toan » van tan, van thanh, manh toan
van tuan » van quan, van ban, anh tuan
ha tinh » va tinh, may tinh
va hang » van hang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((cac tinh) or (ha tinh)) - canh tranh va hang cong ((van toan) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((cac tinh) OR (ha tinh)) - canh tranh va hang cong ((van toan) OR (van tuan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((cac tinh) or (ha tinh)) - canh tranh va hang cong ((van toan) or (van tuan)) cau*.