Perhaps you should try some spelling variations:
truong nghe » trong nghe, truong nghien, trong nghi
thong cong » trong cong, tong cong, thong thong
truong he » trong he, truong thi, truong hoc
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
co lieu » cot lieu, co hieu, so lieu
ho kieu » ho lieu, so kieu, thi kieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((co lieu) or (ho kieu)) tinh - thanh ((truong he) OR (truong nghe)) thong cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((co lieu) OR (ho kieu)) tinh - thanh ((truong he) OR (truong nghe)) thong cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((co lieu) or (ho kieu)) tinh - thanh ((truong he) OR (truong nghe)) thong cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: ((co lieu) or (ho kieu)) tinh - thanh ((truong he) OR (truong nghe)) thong cong dan toan cao*.