Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc chan cuu snippets" » "hoc phan cuu snippets", "hoc chat cuu snippets", "hoc can cuu snippets", "hoc cham cuu snippets", "hoc cap cuu snippets", "hoc nhan cua 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: (((("hoc chan cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc chan cuu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc chan cuu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc chan cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.