Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung duong » nhung dung, nhung huong, nhung tuong
hanh trang » canh tranh, hanh trinh, minh trang
chieu xanh » chieu sach, chieu sang, chieu tinh
duong manh » duong van
hieu manh » hieu nganh, dieu hanh, hien hanh
manh toan » thanh toan, anh tuan, tinh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) OR (chieu xanh)) - ((hanh trang) or (thanh trung)) va nhung duong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu xanh)) - ((hanh trang) OR (thanh trung)) va nhung duong manh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (chieu xanh)) - ((hanh trang) or (thanh trung)) va nhung duong manh toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (chieu xanh)) - ((hanh trang) or (thanh trung)) va nhung duong manh toan cao*.