Perhaps you should try some spelling variations:
hanh tung » thanh tung, manh tung, hanh dung
dung cong » dung trong
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
anh tang » anh bang, anh dang, anh nang
cua dung » cua dang, cua dong, qua dung
tan toan » tap toan, van toan, dan toan

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 xanh - ((hanh tung) or (anh tang)) cua dung cong ((tan toan) OR (tan tran)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - ((hanh tung) OR (anh tang)) cua dung cong ((tan toan) OR (tan tran)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu xanh - ((hanh tung) or (anh tang)) cua dung cong ((tan toan) OR (tan tran)) cau".
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - ((hanh tung) or (anh tang)) cua dung cong ((tan toan) OR (tan tran)) cau*.