Perhaps you should try some spelling variations:
hanh thang » nhanh thang, thanh thang, hanh trang
theo chieu » theo tieu, ho chieu, theo chu
nhung cong » dung cong, thong cong, hang cong
manh toan » thanh toan, anh tuan, tinh toan
thang va » hang va, trang va, thong va
dan toan » van toan, dan than, xuan toan
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (doi chi)) xanh - hanh thang va nhung cong ((dan toan) OR (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (doi chi)) xanh - hanh thang va nhung cong ((dan toan) OR (manh toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (doi chi)) xanh - hanh thang va nhung cong ((dan toan) OR (manh toan)) cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doi chi)) xanh - hanh thang va nhung cong ((dan toan) OR (manh toan)) cau*.