Perhaps you should try some spelling variations:
chiet tach » chieu sach
thien hach » thien thanh, hien hanh
thong cong » trong cong, tong cong, thong thong
canh manh » lanh manh, canh tranh, cach mang
cua thong » cua thuong, cua khong, cua tong
manh toan » thanh toan, tinh toan
manh cua » doanh cua, ban cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chiet tach) or (thien hach)) - canh manh cua thong cong ((manh toan) or (anh tuan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chiet tach) OR (thien hach)) - canh manh cua thong cong ((manh toan) OR (anh tuan)) tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((chiet tach) or (thien hach)) - canh manh cua thong cong ((manh toan) or (anh tuan)) tap*.