Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"moi dan coi snippets" » "moi dang coi snippets", "hoi dan coi snippets", "doi dan coi snippets", "moi dan hoi snippets", "moi dan toi snippets", "moi den coi snippets"
"locating bug code snippets" » "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 coi 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 coi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( moi dan coi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("moi dan coi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.