Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hieu lang » chieu sang, hieu quang, nhieu tang
cua nhung » va nhung
cua hang » cua dang, cua cong, cua ban
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan cau » toan cao, toan ban, toan 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 tinh) or (hieu lang)) - canh tranh ((cua hang) OR (cua nhung)) cong tap toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu tinh) OR (hieu lang)) - canh tranh ((cua hang) OR (cua nhung)) cong tap toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu tinh) or (hieu lang)) - canh tranh ((cua hang) OR (cua nhung)) cong tap toan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu tinh) or (hieu lang)) - canh tranh ((cua hang) OR (cua nhung)) cong tap toan cau*.