Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
mang quan » nang quan, hang quan, manh quan
tang quan » tang luan, nang quan, tong quan
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 - hanh ((mang quan) OR (tang quan)) trong cong tac toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh ((mang quan) OR (tang quan)) trong cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((mang quan) OR (tang quan)) trong cong tac toan cau*.