Perhaps you should try some spelling variations:
duong manh » duong van
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh tang » hanh trang, hanh mang, hanh tung
manh toan » thanh toan, anh tuan, tinh toan
anh tang » anh bang, anh dang, anh nang
va tuong » va thuong, va thong, xa truong
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - ((hanh tang) or (anh tang)) va tuong duong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((hanh tang) OR (anh tang)) va tuong duong manh toan ban.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((hanh tang) or (anh tang)) va tuong duong manh toan ban*.