Perhaps you should try some spelling variations:
xuan truong » xa truong, duong truong
hanh trinh » canh tranh, hanh chinh
chieu sang » chieu sach, chieu xanh, hieu lang
cua truong » cua trung, cac truong, xa truong
hieu manh » chieu xanh, hieu nganh, dieu hanh
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
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: ho ((hieu manh) or (chieu sang)) - hanh trinh ((cua truong) OR (xuan truong)) cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chieu sang)) - hanh trinh ((cua truong) OR (xuan truong)) cong tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu manh) or (chieu sang)) - hanh trinh ((cua truong) OR (xuan truong)) cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sang)) - hanh trinh ((cua truong) OR (xuan truong)) cong tan toan cao*.