Perhaps you should try some spelling variations:
truong thanh » truong trung, truong thpt, truong chung
chieu tinh » trieu tinh, lieu tinh, chau tinh
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu tinh - thanh ((((truong thanh) or (trung tam))) or (trung thanh)) dung cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - thanh ((((truong thanh) OR (trung tam))) OR (trung thanh)) dung cong tan toan cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - thanh ((((truong thanh) or (trung tam))) or (trung thanh)) dung cong tan toan cao*.