Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
hieu manh » chieu xanh, hieu nganh, dieu hanh
cang tang » cang thang, cong tang, lang thang
trong tac » trong cac, tuong tac, trong tan
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
tang ca » tang cua, hang ca, tang ma
ca dung » cao dung, cap dung, cu dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) or (hieu manh)) - cang tang ca dung trong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - cang tang ca dung trong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (hieu manh)) - cang tang ca dung trong tac toan cau*.