Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan doc deu snippets" » "phan doc code snippets", "phan duoc deu snippets", "phan duc deu snippets", "than doc deu snippets", "phan doi deu snippets", "phan doc hieu snippets", "phan hoc dieu snippets"
"python using java snippets" » "python using data 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: (((("phan doc deu snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan doc deu snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phan doc deu snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan doc deu snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.