Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"chap phap du snippets" » "chap phap code snippets", "phap phat du snippets", "phap phan du snippets", "cua phap du snippets", "chap phap dau snippets", "chap phap tu snippets", "chap pha du 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: (((("chap phap du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chap phap du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( chap phap du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chap phap du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.