Perhaps you should try some spelling variations:
"minh den chinh tri hoc mac-lenin" » "minh dien chinh tri hoc mac-lenin", "minh dieu chinh tri hoc mac-lenin", "minh dinh chinh tri hoc mac-lenin", "minh de chinh tri hoc mac-lenin", "minh don chinh tri hoc mac-lenin", "minh danh chinh tri hoc mac-lenin", "minh den chinh triet hoc mac-lenin", "minh den chinh tri thuc mac-lenin", "minh den chinh thai hoc mac-lenin", "minh den chinh tri hoc may-lenin", "minh den chinh tri hoc cac-lenin"
"sinh de chinh tri hoc ma-lenin" » "sinh te chinh tri hoc ma-lenin", "sinh do chinh tri hoc ma-lenin", "sinh ve chinh tri hoc ma-lenin", "sinh dh chinh tri hoc ma-lenin", "sinh dai chinh tri hoc ma-lenin", "sinh de chinh triet hoc ma-lenin", "sinh de chinh tri thuc ma-lenin", "sinh de chinh thai hoc ma-lenin"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("sinh de chinh tri hoc ma-lenin") or ("minh den chinh tri hoc mac-lenin"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("sinh de chinh tri hoc ma-lenin") OR ("minh den chinh tri hoc mac-lenin")).
• Removing quotes may allow a broader search: (( sinh de chinh tri hoc ma-lenin ) or ( minh den chinh tri hoc mac-lenin )).
• Adding a wildcard symbol may retrieve word variants: (("sinh de chinh tri hoc ma-lenin") or ("minh den chinh tri hoc mac-lenin"))*.