Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi muong du snippets" » "doi tuong du snippets", "doi duong du snippets", "moi muong du snippets", "doi luong du snippets", "doi mong du snippets", "doi muong dieu 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: (((("doi muong 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: (((("doi muong du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi muong du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi muong du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.