Perhaps you should try some spelling variations:
dung truong » duong truong, dung trong, dung trung
hanh trung » thanh trung, hanh trang, manh trung
hieu xanh » chieu xanh, hieu nganh, dieu hanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung cap » truong cao, trung tam
thpt toan » thpt tran, thuat toan, thpt thang
cap dung » ap dung, cao dung, chan dung
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 dung truong thpt toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (hieu manh)) - hanh trung cap dung truong thpt toan cau.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (hieu manh)) - hanh trung cap dung truong thpt toan cau*.