Perhaps you should try some spelling variations:
"tri cac hoat snippets" » "tri cac code snippets", "tri cao hoat snippets", "tri cac hat snippets", "tri cac khoan snippets", "tri mac hoat snippets", "tai cac hoat snippets", "tri dac 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 ("tri cac 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 ("tri cac hoat snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( tri cac hoat snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("tri cac hoat snippets"))) or ("locating bug core snippets"))*.