Perhaps you should try some spelling variations:
"dong trinh toan snippets" » "dong tinh toan snippets", "dong thanh toan snippets", "dong trinh han snippets", "cong trinh toan snippets", "dong tranh toan snippets"
"using lbm code snippets" » "using ibm code snippets", "using low code snippets", "using l code snippets", "using lbm core snippets"
"locating bug code snippets" » "locating bug core snippets", "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: (((("using lbm code snippets") or ("dong trinh toan snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using lbm code snippets") OR ("dong trinh toan snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using lbm code snippets ) or ( dong trinh toan snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using lbm code snippets") or ("dong trinh toan snippets"))) or ("locating bug code snippets"))*.