Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
anh truong » manh truong, anh thuong, anh trong
cong thanh » dong thanh, cong trinh, cong tan
thanh tran » thanh trang, thanh toan, thanh tra
thpt hang » thpt thang, thpt hung, thpt quang
thpt hong » thpt hung, thpt dong, thpt hon
tran tap » toan tap, tran tan, tran tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sang) OR (chieu sach)) - anh truong ((thpt hang) or (thpt hong)) cong thanh tran tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (chieu sach)) - anh truong ((thpt hang) OR (thpt hong)) cong thanh tran tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sang) OR (chieu sach)) - anh truong ((thpt hang) or (thpt hong)) cong thanh tran tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) OR (chieu sach)) - anh truong ((thpt hang) or (thpt hong)) cong thanh tran tap*.