Perhaps you should try some spelling variations:
truong trung » tieng trung
chieu sang » chieu sach, chieu xanh, hieu lang
cua truong » cua trung, xuan truong, cac truong
doi chieu » doc hieu, doi chi, mot chieu
tranh cua » doanh cua, manh cua
trung dan » trung dai, tung dan, trung van
than va » thanh va, nhan va, toan 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 chieu sang - canh tranh cua truong trung dan ((van ban) or (than va))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - canh tranh cua truong trung dan ((van ban) OR (than va)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - canh tranh cua truong trung dan ((van ban) or (than va))*.