Perhaps you should try some spelling variations:
xuan truong » xa truong, duong truong
hanh tranh » canh tranh, hanh trinh, hanh trang
cua truong » cua trung, cac truong, xa truong
hoc chieu » hoc thieu, ho chieu, hoc dieu
tan thanh » tran thanh, tang thanh, toan thanh
thanh cau » thanh chau, thanh mau, nhanh cau
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) or (hoc hien)) sach - hanh tranh ((cua truong) OR (xuan truong)) cong tan thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc hien)) sach - hanh tranh ((cua truong) OR (xuan truong)) cong tan thanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) or (hoc hien)) sach - hanh tranh ((cua truong) OR (xuan truong)) cong tan thanh cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (hoc hien)) sach - hanh tranh ((cua truong) OR (xuan truong)) cong tan thanh cau*.