Perhaps you should try some spelling variations:
"sinh tran cong snippets" » "sinh trac cong snippets", "sinh tren cong snippets", "vinh tran cong snippets", "sinh tran hong snippets", "sinh trien cong snippets", "sinh tran hoang snippets"
"dung java java snippets" » "dung va java 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: (((("sinh tran cong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sinh tran cong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sinh tran cong snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sinh tran cong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.