Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu quang » thieu quang, hieu quan, hieu qua
hieu sang » chieu sang, hieu lang, nhieu tang
va phuong » va thuong, cac phuong
hoang van » hang va
trung va » truong va, trang va, trung ha
van tuan » van quan, van ban, anh tuan
tuan chu » tuan thu, quan chu, tan chu

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 sang) OR (hieu quang)) - thanh trung va phuong hoang van tuan chu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu sang) OR (hieu quang)) - thanh trung va phuong hoang van tuan chu".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu sang) OR (hieu quang)) - thanh trung va phuong hoang van tuan chu*.