Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi van cuc snippets" » "thi van cuc snippets", "chi van cuc snippets", "phi van cuc snippets", "khi van duc snippets", "khi van luc snippets", "khi van cu 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: (((("khi van cuc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khi van cuc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi van cuc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi van cuc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.