Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
thien danh » thien anh, thien dang, thien thanh
duong manh » duong van
hieu manh » chieu xanh, hieu nganh, dieu hanh
manh toan » thanh toan, anh tuan, tinh toan
cua dang » cua ban
toan tap » toan ban

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 danh) or (hieu manh)) - hanh tranh ((cua dang) or (cua cong)) duong manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien danh) OR (hieu manh)) - hanh tranh ((cua dang) OR (cua cong)) duong manh toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien danh) or (hieu manh)) - hanh tranh ((cua dang) or (cua cong)) duong manh toan tap*.