Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong tu son snippets" » "dong tu code snippets", "dong luc son snippets", "thong tu son snippets", "dong tai son snippets", "dong tu so snippets", "dong tu san snippets", "dong 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 ("dong 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 ("dong tu son snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( dong tu son snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("dong tu son snippets"))) or ("locating bug core snippets"))*.