Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"von ngan can snippets" » "toan ngan can snippets", "vu ngan can snippets", "von luan can snippets", "von ngan han snippets", "von ngan van snippets", "von ngan lan 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: (((("von ngan can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("von ngan can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( von ngan can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("von ngan can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.