Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"moi dan tinh snippets" » "moi doan tinh snippets", "moi dang tinh snippets", "moi dan trinh snippets", "hoi dan tinh snippets", "doi dan tinh snippets", "moi dan tinh slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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: (((("moi dan tinh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("moi dan tinh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( moi dan tinh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("moi dan tinh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.