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