Perhaps you should try some spelling variations:
nhung duong » nhung dung, nhung huong, nhung tuong
hanh tranh » hanh trinh, hanh trang, lanh tranh
hoc chieu » hoc thieu, ho chieu, hoc dieu
cua nhung » va nhung
duong van » duong va, luong va, dang van
van thanh » ban thanh, van tuan
thanh cao » thanh ca, thanh cac, thanh thao

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

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