Perhaps you should try some spelling variations:
"dong trinh java snippets" » "cong trinh java snippets", "dong tinh java snippets", "dong tranh java snippets", "dong trinh java slippers"
"trong cho code snippets" » "trong tho code snippets", "trong co code snippets", "rong cho code snippets", "trong cho cong snippets", "trong cfd code snippets", "trong cho con snippets", "trong cho code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("dong trinh java snippets") or ("trong cho code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong trinh java snippets") OR ("trong cho code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong trinh java snippets ) or ( trong cho code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong trinh java snippets") or ("trong cho code snippets"))) or ("locating bug code snippets"))*.