Perhaps you should try some spelling variations:
thieu khang » thieu quang
chieu khong » chien chong, chu khong, chieu duong
duong xanh » duong van, duong sach, duong minh
duong manh » duong van
canh manh » lanh manh, canh tranh, cach mang
cua nhung » va nhung
manh cua » doanh cua, ban cua
quan cau » quang cao, toan cau, quan ha

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 khang) or (chieu khong)) - canh manh cua nhung ((duong xanh) OR (duong manh)) quan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu khang) OR (chieu khong)) - canh manh cua nhung ((duong xanh) OR (duong manh)) quan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu khang) or (chieu khong)) - canh manh cua nhung ((duong xanh) OR (duong manh)) quan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu khang) or (chieu khong)) - canh manh cua nhung ((duong xanh) OR (duong manh)) quan cau*.