Perhaps you should try some spelling variations:
"trong hoach dat snippets" » "trong hach dat snippets", "trong hoat dat snippets", "trong doanh dat snippets", "trong hoach xay snippets", "trong hoc dat snippets", "trong hoach va snippets", "trong hoach dat slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("trong hoach dat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong hoach dat snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong hoach dat snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong hoach dat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.