Perhaps you should try some spelling variations:
hanh truong » hanh trong, anh truong, manh truong
thieu sach » chieu sach, thien hach, theo sach
truong cua » truong ca, truong quan, truong cao
nhung cong » dung cong, thong cong, hang cong
hieu cach » hieu cac, chieu sach, hieu ca
cua nhung » va nhung
manh toan » thanh toan, anh tuan, tinh toan
dan toan » van toan, dan than, 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 ((thieu sach) or (hieu cach)) - hanh truong cua nhung cong ((dan toan) OR (manh toan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (hieu cach)) - hanh truong cua nhung cong ((dan toan) OR (manh toan)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sach) or (hieu cach)) - hanh truong cua nhung cong ((dan toan) OR (manh toan)) tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (hieu cach)) - hanh truong cua nhung cong ((dan toan) OR (manh toan)) tap*.