Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
lanh manh » lanh tranh, lan anh, anh anh
cua thong » cua thuong, cua khong, cua tong
chi sang » chi lang, chieu sang, chi chang
van manh » van minh, van anh, van hanh
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi sang - ((lanh manh) or (van manh)) cua thong cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi sang - ((lanh manh) OR (van manh)) cua thong cong tac toan cao.
• Adding a wildcard symbol may retrieve word variants: doi chi sang - ((lanh manh) or (van manh)) cua thong cong tac toan cao*.