Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong hieu ca snippets" » "dong hieu code snippets", "dung hieu ca snippets", "dong trieu ca snippets", "doc hieu ca snippets", "dong hieu cac snippets", "dong hieu cua snippets", "dong hieu va 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: (((("dong hieu ca snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong hieu ca snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong hieu ca snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong hieu ca snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.