Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
lieu tinh » trieu tinh, diep tinh, bien tinh
trung cap » truong cao, trung tam
tran tuan » tran xuan, tran quang, tran thanh
cong tac » cong ty
toan cao » toan ban, toan tap
ho lieu » so lieu, co lieu, ho kieu

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

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