Perhaps you should try some spelling variations:
tranh thuat » trong thuat, tranh chua, tranh thai
thuat nhung » thuat hung, thuat chung, thuat chuong
thieu xanh » chieu xanh, thien anh, thien danh
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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)) - canh tranh thuat nhung cong tac toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (hieu manh)) - canh tranh thuat nhung cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (hieu manh)) - canh tranh thuat nhung cong tac toan cau*.