Perhaps you should try some spelling variations:
thanh toan » thanh hoa, tinh toan
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
dang cong » dung cong
manh toan » anh tuan, tinh toan
cua dang » cua cong, cua ban
ke tin » ke tinh, le tin, de tin
thiet » thieu

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

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