Perhaps you should try some spelling variations:
"phi che hoat snippets" » "phi che code snippets", "phi che khoa snippets", "phi cao hoat snippets", "phi co hoat snippets", "pha che hoat snippets", "phap che hoat snippets", "ghi chep hoat snippets"
"locating bug core snippets" » "locating bug code 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: (((("python using java snippets") or ("phi che hoat snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("phi che hoat snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( phi che hoat snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("phi che hoat snippets"))) or ("locating bug core snippets"))*.