Perhaps you should try some spelling variations:
hanh trong » hanh trang, anh trong, hinh trong
nhieu tang » chieu sang, nhiet nang
hieu lang » chieu sang, hieu quang, hieu van
duong van » duong va, luong va, dang van
trong va » trong van, trong ca, trong cac
va thong » va thuong, va phuong, he thong
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: ho ((hieu lang) OR (nhieu tang)) - hanh trong va thong ((duong manh) or (duong van)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (nhieu tang)) - hanh trong va thong ((duong manh) OR (duong van)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) OR (nhieu tang)) - hanh trong va thong ((duong manh) or (duong van)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) OR (nhieu tang)) - hanh trong va thong ((duong manh) or (duong van)) toan cao*.