Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
thanh trung » thanh tung
hoc hieu » hoc thieu, hoc hien, hoc dieu
doc hieu » toc thieu, hoc thieu, hoc hien
trung va » truong va, trang va, trung ha
dan than » dan chan, ban than, dan toan
van than » van thanh, van thang, van tuan

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) or (doc hieu)) manh - thanh trung va nhung tuong ((dan than) OR (van than)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hieu) OR (doc hieu)) manh - thanh trung va nhung tuong ((dan than) OR (van than)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hieu) or (doc hieu)) manh - thanh trung va nhung tuong ((dan than) OR (van than)) cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) or (doc hieu)) manh - thanh trung va nhung tuong ((dan than) OR (van than)) cao*.