Perhaps you should try some spelling variations:
"trong can chan snippets" » "trong can code snippets", "trong canh chan snippets", "trong chan chan snippets", "trong cac chan snippets", "trong dan chan snippets", "trong cam chan snippets", "trong ban chan snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java 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: (((("trong can chan snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong can chan snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( trong can chan snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong can chan snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.