Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tieu dan cac snippets" » "tieu dan code snippets", "tieu danh cac snippets", "sieu dan cac snippets", "tieu dam cac snippets", "tieu dan cach snippets", "tieu dang cac snippets", "tieu dan ca 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: (((("tieu dan cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tieu dan cac snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tieu dan cac snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tieu dan cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.