Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
hanh sang » anh sang, hanh mang, lanh sang
cuong tap » luong tap, cong tac, luong tai
hanh san » thanh san, khach san, thanh son
thi dung » thi huong, thi nhung, thi cong
cong tap » cong tac, cong tan, tong tap
quan cau » quang cao, toan cau, quan ha

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((hanh sang) OR (hanh san)) thi dung ((cong tap) OR (cuong tap)) quan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((hanh sang) or (hanh san)) thi dung ((cong tap) OR (cuong tap)) quan cau~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((hanh sang) or (hanh san)) thi dung ((cong tap) OR (cuong tap)) quan cau*.