Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"dusing java java snippets" » "using java java snippets", "dusing java java slippers"
"van ngo va snippets" » "van ngoc va snippets", "van nga va snippets", "ban ngo va snippets", "van ngo van snippets", "van ngoi va snippets", "van ngon va snippets", "van ngo va slippers"

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: (((("van ngo va snippets") or ("dusing java java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van ngo va snippets") OR ("dusing java java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( van ngo va snippets ) or ( dusing java java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van ngo va snippets") or ("dusing java java snippets"))) or ("locating bugs code snippets"))*.