Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"sach xa cham snippets" » "sach xa code snippets", "sach dao cham snippets", "sach nha cham snippets", "sach bai cham snippets", "sach va cham snippets", "sach ca cham snippets", "sach xa chau 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: (((("sach xa cham snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sach xa cham snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( sach xa cham snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach xa cham snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.