Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"toc trien du snippets" » "toc trien code snippets", "buoc trien du snippets", "toc thieu du snippets", "moc tren du snippets", "toc trien cua snippets", "toc trien quy snippets", "toc truyen du 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: (((("toc trien du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc trien du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( toc trien du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc trien du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.