Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
lang luong » nang luong, hang luong, lang muong
hoc thieu » toc thieu, hoc hien
long gian » long giao, luong giao, luong giai
luong va » dung va
toan cau » toan cao, toan ban, toan tap
va toan » van toan, bai toan, tap toan

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 - thang ((long gian) or (khong gian)) lang luong va toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thang ((long gian) OR (khong gian)) lang luong va toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thang ((long gian) or (khong gian)) lang luong va toan cau*.