Perhaps you should try some spelling variations:
truong thanh » truong trung, truong thpt, truong chung
dung truong » duong truong, dung trong, dung trung
truong cao » truong dai
thanh toan » thanh hoa, thanh san, tinh toan
hieu xanh » chieu xanh, hieu nganh, dieu hanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung cap » trung tam
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu xanh) or (hieu manh)) - hanh ((trung cap) OR (truong cao)) dung truong thanh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (hieu manh)) - hanh ((trung cap) OR (truong cao)) dung truong thanh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) or (hieu manh)) - hanh ((trung cap) OR (truong cao)) dung truong thanh toan cau".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (hieu manh)) - hanh ((trung cap) OR (truong cao)) dung truong thanh toan cau*.