Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"doc trinh 11 snippets" » "doc tinh 11 snippets", "doi trinh 11 snippets", "hoc trinh 11 snippets", "doc trinh ky snippets", "doc trinh do snippets", "doc 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: (((("doc 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: (((("doc trinh 11 snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doc trinh 11 snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc trinh 11 snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.