Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kim ngan cac snippets" » "kim ngoc cac snippets", "kim ngan bac snippets", "kim ngan can snippets", "kim ngon cac snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("kim ngan cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kim ngan cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kim ngan cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kim ngan cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.