Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van khan cap snippets" » "van khan code snippets", "van khanh cap snippets", "van khang cap snippets", "van phan cap snippets", "van khan ap snippets", "van than cap snippets", "van khoan cam 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: (((("van khan cap snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van khan cap snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van khan cap snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van khan cap snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.