Perhaps you should try some spelling variations:
thanh thanh » nhanh thanh, thanh toan, thanh phan
hanh trinh » canh tranh, hanh chinh
hanh tranh » canh tranh, hanh trang, lanh tranh
cua truong » cua trung, xuan truong, cac truong
theo dien » theo tieu, thu dien, thuy dien
dien sach » dien anh
long doan » cong doan, dong doanh, rong doanh
long dan » cong dan, nong dan, long van

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

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