Perhaps you should try some spelling variations:
"phi thi hoan snippets" » "phi thi code snippets", "phi thi hoa snippets", "phi thi hanh snippets", "phi thi hong snippets", "phi tai hoan snippets", "chi thi hoan snippets", "phi phi hoan 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 thi hoan 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 thi hoan snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( phi thi hoan snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("phi thi hoan snippets"))) or ("locating bug core snippets"))*.