Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong bien do snippets" » "dong bien code snippets", "dong dien do snippets", "dong tien do snippets", "long bien do snippets", "dong bien doi snippets", "dong bien 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 bien 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 bien do snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong bien do snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong bien do snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.