Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
bang cong » dang cong, bang song, hang cong
manh toan » thanh toan, anh tuan, tinh toan
trung va » truong va, trang va, trung ha
dan toan » van toan, dan than, xuan toan
va bang » va nang, va lang, va ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sang - thanh trung va bang cong ((dan toan) or (manh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh trung va bang cong ((dan toan) OR (manh toan)) cao*.