Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tranh » canh tranh, hanh trinh, hanh trang
van thanh » ban thanh, van tuan
ho chieu » theo chieu, hoc thieu, doi chieu
van toan » van tuan, van tan, manh toan

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 sang - ((hanh tranh) or (hanh chinh)) va nhung phuong ((van toan) OR (van thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - ((hanh tranh) OR (hanh chinh)) va nhung phuong ((van toan) OR (van thanh)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - ((hanh tranh) or (hanh chinh)) va nhung phuong ((van toan) OR (van thanh)) cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - ((hanh tranh) or (hanh chinh)) va nhung phuong ((van toan) OR (van thanh)) cau*.