Perhaps you should try some spelling variations:
"pha tu choi snippets" » "pha tu code snippets", "pha su choi snippets", "pha tu chi snippets", "pha tu chon snippets", "phan tu choi snippets", "pham tu choi snippets", "phap tu choi 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 ("pha tu choi snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("pha tu choi snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( pha tu choi snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("pha tu choi snippets"))) or ("locating bug core snippets"))*.