Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van thi case snippets" » "van thi code snippets", "van thi canh snippets", "van thi cam snippets", "van thi ca snippets", "van tai case snippets", "dan thi case snippets", "van thu case 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: (((("python using java snippets") or ("van thi case snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("van thi case snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( van thi case snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("van thi case snippets"))) or ("locating bug core snippets"))*.