Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu quang » thieu quang, hieu quan, diep quang
trung cua » truong cua, trung tuan, trung cap
cua trong » cua truong, cua trung, qua trong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
toan ban » van ban

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 quang) OR (hieu qua)) - thanh trung cua trong cong manh toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu quang) OR (hieu qua)) - thanh trung cua trong cong manh toan ban*".