Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
cua trong » cua truong, cua trung, ca trong
qua trong » quan trong, qua trinh, qua song
cong san » cong tac
san toan » van toan, dan toan, manh 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 - canh tranh ((cua trong) or (qua trong)) cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh tranh ((cua trong) OR (qua trong)) cong san toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh tranh ((cua trong) or (qua trong)) cong san toan cau*.