Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xac xuan du snippets" » "xac xuat du snippets", "dac xuan du snippets", "bach xuan du snippets", "xac xuan duc snippets", "xac xuan huy snippets", "xac xuan thu 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: (((("xac xuan du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xac xuan du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xac xuan du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xac xuan du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.