Perhaps you should try some spelling variations:
thien hieu » thien nhien, thien chien, thien hue
manh trung » manh tung, thanh trung, manh hung
hieu lang » chieu sang, hieu quang, nhieu tang
manh toan » thanh toan, anh tuan, tinh toan
dap bang » cap bang, dau bang, dang bang
lap bang » lap ban, cao bang, mat bang
van toan » van tuan, van tan, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: thien hieu lang - manh trung ((dap bang) or (lap bang)) song ((van toan) or (manh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thien hieu lang - manh trung ((dap bang) OR (lap bang)) song ((van toan) OR (manh toan)) cao.
• Adding a wildcard symbol may retrieve word variants: thien hieu lang - manh trung ((dap bang) or (lap bang)) song ((van toan) or (manh toan)) cao*.