Perhaps you should try some spelling variations:
cua khong » hua khong, cua phuong, cua thuong
cua tong » cua cong, cua dong, cua nong
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan cao » toan ban, toan tap
chi van » chu van
thi van » thi lan, thi hanh, thi nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chi van) OR (thi van)) - canh tranh ((cua khong) or (cua tong)) cong van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chi van) OR (thi van)) - canh tranh ((cua khong) OR (cua tong)) cong van toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chi van) OR (thi van)) - canh tranh ((cua khong) or (cua tong)) cong van toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chi van) OR (thi van)) - canh tranh ((cua khong) or (cua tong)) cong van toan cao*.