Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc dao cu snippets" » "hoc dan cu snippets", "hoc cao cu snippets", "hoc dai cu snippets", "hoc dao cau snippets", "hoc dao chu snippets", "hoc dao 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 dao cu 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 dao cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc dao cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc dao cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.