Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"dinh hoc php snippets" » "sinh hoc php snippets", "hinh hoc php snippets", "tinh hoc php snippets", "dinh hoc phap snippets", "dinh hoc pho snippets", "dinh hoc phe 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: (((("dinh hoc php snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dinh hoc php snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dinh hoc php snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dinh hoc php snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.