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