Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"sach dat cua snippets" » "sach dat code snippets", "sach dao cua snippets", "sach danh cua snippets", "sach bai cua snippets", "sach dai cua snippets", "sach day cua snippets", "sach mat cua 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 dat cua 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 dat cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( sach dat cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach dat cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.