Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doc hieu mo snippets" » "doc hieu code snippets", "toc thieu mo snippets", "hoc thieu mo snippets", "hoc hien mo snippets", "doc hieu moi snippets", "doc hieu mot snippets", "doc hieu so 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 mo 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 mo snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doc hieu mo snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc hieu mo snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.