Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
dang cong » dung cong
cot diep » co dien, cot thep, co dieu
cua dang » cua cong, cua ban
van toan » van tuan, van thanh, manh toan
van tan » van tuan, van ban, van thanh
van tai » von tai, van tuan

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

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