Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc xuan can snippets" » "ho xuan can snippets", "hoc quan can snippets", "hoc luan can snippets", "hoc xuan cang snippets", "hoc xuan tan snippets", "hoc xuan chanh 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 xuan can 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 xuan can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc xuan can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc xuan can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.