Perhaps you should try some spelling variations:
thanh trung » thanh tung
cua khong » cua phuong, cua thuong, cua cong
hua khong » hoa khong, hoac khong, phuc khong
theo chu » theo chieu, cho chu, chao chu
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu
chu van » cuu van, chu han

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu van - thanh trung ((cua khong) or (hua khong)) cong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu van - thanh trung ((cua khong) OR (hua khong)) cong dan phan cau.
• Adding a wildcard symbol may retrieve word variants: theo chu van - thanh trung ((cua khong) or (hua khong)) cong dan phan cau*.