Perhaps you should try some spelling variations:
"trong ca chan snippets" » "trong ca code snippets", "trong cac chan snippets", "trong van chan snippets", "trong nha chan snippets", "trong cam chan snippets", "trong ca chang snippets", "trong can 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 ca 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 ca chan snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( trong ca chan snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong ca chan snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.