Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat, trinh han
thieu xanh » chieu xanh, hieu manh, thien anh
cong luong » cong thuong, nang luong, cong dong
hoc thieu » toc thieu, hoc hien
cong dung » cuong dung, cong dong, thong dung
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 ((tinh chat) or (trinh quan)) nhung ((cong dung) OR (cong luong)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh ((tinh chat) OR (trinh quan)) nhung ((cong dung) OR (cong luong)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh ((tinh chat) or (trinh quan)) nhung ((cong dung) OR (cong luong)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((tinh chat) or (trinh quan)) nhung ((cong dung) OR (cong luong)) toan cau*.