Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tu tham cua snippets" » "tu tham code snippets", "tu thai cua snippets", "tu than cua snippets", "tu thao cua snippets", "tru tham cua snippets", "tu cham cua snippets", "tu kham 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: (((("tu tham 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: (((("tu tham cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tu tham cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tu tham cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.