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