Perhaps you should try some spelling variations:
thang long » thanh cong
tieu tinh » trieu tinh, tieu trinh, lieu tinh
viet dung » viet hung, viet huong, viet trung
vat dung » van dung, va dung, mat duong
cong tac » cong ty
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 tieu tinh - thang long ((vat dung) OR (viet dung)) cong tac toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu tinh - thang long ((vat dung) OR (viet dung)) cong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: theo tieu tinh - thang long ((vat dung) OR (viet dung)) cong tac toan cao*.