Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"cuu trinh 11 snippets" » "cuu tinh 11 snippets", "cuu trich 11 snippets", "qua trinh 11 snippets", "cuu trinh ky snippets", "cuu trinh do snippets", "cuu trinh tu 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: (((("cuu trinh 11 snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cuu trinh 11 snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cuu trinh 11 snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuu trinh 11 snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.