Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
thien quan » trien quang, lien quan, thien van
hanh tang » hanh trang, anh tang, hanh mang
cua nhung » va nhung
cong danh » cuong danh, cong dan, cong thanh
tang cua » mang cua, hang cua, tang luan
cong anh » dong anh, hong anh, cong thanh
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) or (thien quan)) - hanh tang cua nhung ((cong anh) OR (cong danh)) tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (thien quan)) - hanh tang cua nhung ((cong anh) OR (cong danh)) tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sang) or (thien quan)) - hanh tang cua nhung ((cong anh) OR (cong danh)) tuan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) or (thien quan)) - hanh tang cua nhung ((cong anh) OR (cong danh)) tuan cau*.