Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"chung van he snippets" » "chung van code snippets", "phung van he snippets", "nhung van he snippets", "chung han he snippets", "chung van hoe snippets", "chung van hue snippets", "chung van de snippets"
"python using java snippets" » "python using data snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("chung van he snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chung van he snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( chung van he snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chung van he snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.