Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
duong vanh » duong van, duong manh, duong anh
duong xanh » duong manh, duong van, duong sach
hoc thieu » toc thieu, hoc hien
doanh cua » doanh luan
manh cua » ban cua
tuan cau » toan cau, quan cau, tuan cu

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