Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
hung thang » cang thang, hung tran
thanh toan » thanh hoa, thanh san, tinh toan
hieu cach » hieu cac, chieu sach, hieu ca
manh toan » anh tuan, tinh toan
thang va » hang va, trang va, thong va
va thong » va thuong, va phuong, he thong

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien thanh) or (hieu cach)) - hung thang va thong thong ((manh toan) or (thanh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (hieu cach)) - hung thang va thong thong ((manh toan) OR (thanh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) or (hieu cach)) - hung thang va thong thong ((manh toan) or (thanh toan)) cau*.