Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sach » chinh sach, chiet tach, chieu sang
thanh toan » thanh hoa, thanh san, tinh toan
hanh sinh » hanh tinh, hanh dinh, hinh sinh
cua nhung » va nhung
manh toan » anh tuan, tinh toan
ho chieu » theo chieu, hoc thieu, doi chieu
sinh cua » manh cua, dinh cuu, sinh va
san toan » van toan, dan toan, xuan toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - hanh sinh cua nhung cong ((san toan) or (((manh toan) OR (thanh toan)))) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh sinh cua nhung cong ((san toan) OR (((manh toan) OR (thanh toan)))) tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh sinh cua nhung cong ((san toan) or (((manh toan) OR (thanh toan)))) tap*".