Perhaps you should try some spelling variations:
truong thanh » truong trung, truong thpt, truong chung
dung cong » dung trong
chu xanh » chieu xanh, chua xang, chuc danh
chu manh » ho manh, chu han, chu van
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
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: theo ((chu xanh) OR (chu manh)) - hanh ((trung thanh) or (truong thanh)) dung cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu xanh) OR (chu manh)) - hanh ((trung thanh) OR (truong thanh)) dung cong tan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu xanh) OR (chu manh)) - hanh ((trung thanh) or (truong thanh)) dung cong tan toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) OR (chu manh)) - hanh ((trung thanh) or (truong thanh)) dung cong tan toan cau*.