Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
chieu sang » chieu sach, chieu xanh, hieu lang
truong thi » truong thpt, truong dai, luong thi
truong he » trong he, truong nghe, truong hoc
thong van » trong van, thong va, thong quan
van toan » van tuan, van tan, van thanh
toan tap » toan ban

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

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