Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
thanh dung » thanh duong, thanh tung, thanh hung
dong chong » dong thong, dong chung, dong cong
chong phap » phuong phap
hieu manh » chieu xanh, hieu nganh, dieu hanh
dung cong » dung trong
phap toan » phap hoan, phap luan, phap phan
toan cau » 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: hoc ((thieu xanh) OR (hieu manh)) - thanh dung cong dong chong phap toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (hieu manh)) - thanh dung cong dong chong phap toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (hieu manh)) - thanh dung cong dong chong phap toan cau*.