Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc kham cua snippets" » "goc kham cua snippets", "hoc khac cua snippets", "hoc nham cua snippets", "hoc kham chua snippets", "hoc ham cua snippets", "hoc khan 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 kham cua 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 kham cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc kham cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc kham cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.