Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
trung cap » truong cao, trung tam
thong tac » thong cac, tuong tac, thong tai
theo thu » theo chu, theo tu, theo tieu
thu bang » thu ban, thu hang, chu bang
tac toan » tap toan, tam toan, hach 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: theo thu bang - thanh ((trung tuan) or (trung cap)) thong thong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo thu bang - thanh ((trung tuan) OR (trung cap)) thong thong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: theo thu bang - thanh ((trung tuan) or (trung cap)) thong thong tac toan cao*.