Perhaps you should try some spelling variations:
quang thinh » quang thanh, quang chinh, quang ninh
cham tinh » chau tinh, cham binh, ha tinh
luat data » luat dat, luat dan, luat dau
toc cham » toc thai
tran dan » tran dang, tran danh, tran doan
dan dung » van dung, tin dung, ap dung
dan dan » dang dan, ban dan, dao dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc cham tinh - tran dan dan dung ((quang thinh) or (quan tri)) luat data~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc cham tinh - tran dan dan dung ((quang thinh) OR (quan tri)) luat data*.