Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong tu son snippets" » "cong tu code snippets", "cong ty son snippets", "cong cu son snippets", "dong tu son snippets", "cong tu so snippets", "cong tu san snippets", "cong vu son 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 ("cong tu son snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("cong tu son snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( cong tu son snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("cong tu son snippets"))) or ("locating bug core snippets"))*.