Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
tang cua » mang cua, tang luan, thong cua
hang cua » mang cua, hang ca, huong cua
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - hanh ((tang cua) OR (hang cua)) nhung cong ((dan than) or (dan chan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - hanh ((tang cua) OR (hang cua)) nhung cong ((dan than) OR (dan chan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo hieu lang - hanh ((tang cua) OR (hang cua)) nhung cong ((dan than) or (dan chan)) cau".
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - hanh ((tang cua) OR (hang cua)) nhung cong ((dan than) or (dan chan)) cau*.