Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc thu canh snippets" » "hoc thuc hanh snippets", "hoc thu cong snippets", "hoc thu ban snippets", "hoc thuc canh snippets", "hoc thuy canh snippets", "hoc tu canh 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 thu canh 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 thu canh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc thu canh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc thu canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.