Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"sach ma cua snippets" » "sach ma code snippets", "sach mau cua snippets", "sach xa cua snippets", "sach ha cua snippets", "sach ca cua snippets", "sach manh cua snippets", "sach mang 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 ma 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 ma cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( sach ma cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach ma cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.