Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
nhung huong » nhung tuong, nhung cong, nhung dung
hieu lang » chieu sang, hieu quang, nhieu tang
hanh manh » hanh mang, lanh manh, hoang manh
doi hieu » doi chieu, doc hieu, doi hien
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
manh va » hanh va, anh va, minh va

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

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