Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"danh du doc snippets" » "danh du code snippets", "danh dau doc snippets", "danh tu doc snippets", "dinh du doc snippets", "danh duy doc snippets", "danh du hoc snippets", "danh nu doc 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 ("danh du doc snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("danh du doc snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( danh du doc snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("danh du doc snippets"))) or ("locating bug core snippets"))*.