Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"doi hanh tin snippets" » "doc hanh tin snippets", "doi khang tin snippets", "thi hanh tin snippets", "doi hanh tinh snippets", "doi hanh trinh snippets", "doi nhanh tinh 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: (((("doi hanh tin snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi hanh tin snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doi hanh tin snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi hanh tin snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.