Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trinh » canh tranh, hanh chinh
lieu tinh » trieu tinh, diep tinh, bien tinh
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
dan toan » dan than, manh toan, xuan toan
van toan » van tuan, van tan, van thanh
dan chan » dan gian, dan ca, van chat
co lieu » cot lieu, co hieu, so lieu

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

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