Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong son du snippets" » "dong son code snippets", "dong von du snippets", "dong san du snippets", "hoang son du snippets", "dong song du snippets", "dong ton du snippets", "dong son d 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 son du 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 son du snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong son du snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong son du snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.