Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc cham cuu snippets" » "toc cham cuu snippets", "hoc chat cuu snippets", "hoc chan cuu snippets", "hoc cap cuu snippets", "hoc chat 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 cham 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 cham cuu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc cham cuu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc cham cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.