Perhaps you should try some spelling variations:
"dung sai code snippets" » "dung tai code snippets", "dung va code snippets", "dung dat code snippets", "dung sai code slippers"
"dong co code snippets" » "dong cfd code snippets", "dong co code slippers", "cong co code snippets"
"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: (((("dung sai code snippets") or ("dong co code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung sai code snippets") OR ("dong co code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung sai code snippets ) or ( dong co code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung sai code snippets") or ("dong co code snippets"))) or ("locating bug code snippets"))*.