Perhaps you should try some spelling variations:
thuat bang » thuat ban, thuat mang, thuat nang
theo chua » theo chu, ho chua, cheo cua
chua xang » chua nang, chuc nang, chu bang
anh tranh » lanh tranh, anh thanh, anh trinh
chua bang » chu bang, chua nang, cua ban
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 chua xang - ((anh tranh) or (canh tranh)) ((chua bang) OR (thuat bang)) cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chua xang - ((anh tranh) OR (canh tranh)) ((chua bang) OR (thuat bang)) cong tac toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chua xang - ((anh tranh) or (canh tranh)) ((chua bang) OR (thuat bang)) cong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: theo chua xang - ((anh tranh) or (canh tranh)) ((chua bang) OR (thuat bang)) cong tac toan cao*.