Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
manh truong » manh trung, manh tuong, anh truong
nhung huong » nhung tuong, nhung cong, nhung dung
hieu quang » thieu quang, hieu quan, hieu qua
manh trong » anh trong, manh trung, manh tuong
doc hieu » toc thieu, hoc thieu, hoc hien
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu quang - ((manh trong) OR (manh truong)) van ((nhung huong) or (nhung phuong)) dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu quang - ((manh trong) OR (manh truong)) van ((nhung huong) OR (nhung phuong)) dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu quang - ((manh trong) OR (manh truong)) van ((nhung huong) or (nhung phuong)) dan than cau".
• Adding a wildcard symbol may retrieve word variants: doc hieu quang - ((manh trong) OR (manh truong)) van ((nhung huong) or (nhung phuong)) dan than cau*.