Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sang » chieu sach, chieu xanh, hieu lang
truong cao » truong dai
thong mang » thong quang, thong minh, thong van
trung cap » trung tam
mang toan » manh toan, dang toan, mang thang
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 ((chieu tinh) or (chieu sang)) - manh ((trung cap) OR (truong cao)) thong thong mang toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (chieu sang)) - manh ((trung cap) OR (truong cao)) thong thong mang toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu tinh) or (chieu sang)) - manh ((trung cap) OR (truong cao)) thong thong mang toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (chieu sang)) - manh ((trung cap) OR (truong cao)) thong thong mang toan tap*.