Perhaps you should try some spelling variations:
chien tranh » hien trang
tien thanh » tien thinh, tran thanh, den thanh
thong cong » trong cong, tong cong, thong thong
hanh hang » thanh hang, hang hang, hanh han
cua thong » cua thuong, cua khong, cua tong
manh toan » thanh toan, anh tuan, tinh toan
hang cua » mang cua, hang ca, huong cua
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: hoc ((tien thanh) or (chien tranh)) - hanh hang cua thong cong ((san toan) OR (manh toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tien thanh) OR (chien tranh)) - hanh hang cua thong cong ((san toan) OR (manh toan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((tien thanh) or (chien tranh)) - hanh hang cua thong cong ((san toan) OR (manh toan)) ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((tien thanh) or (chien tranh)) - hanh hang cua thong cong ((san toan) OR (manh toan)) ban*.