Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doc hieu can snippets" » "doc hieu code snippets", "toc thieu can snippets", "hoc thieu can snippets", "hoc hien can snippets", "doc hieu van snippets", "doc dieu can snippets", "doc hieu cac 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: (((("doc hieu can snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc hieu can snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doc hieu can snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc hieu can snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.