Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ham vat moi snippets" » "ham mat moi snippets", "pham van moi snippets", "nhan vat moi snippets", "ham va moi snippets", "ham bat moi snippets", "ham vao moi 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: (((("ham vat moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ham vat moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ham vat moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ham vat moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.