Perhaps you should try some spelling variations:
"mon ho c." » "mon co c." (Expand Search), "mon khoa c." (Expand Search), "mong hoa c." (Expand Search), "mon heo c." (Expand Search), "mon _o c." (Expand Search), "kon ho c." (Expand Search), "mon ho co." (Expand Search), "mon ho uc." (Expand Search), "mon ho o." (Expand Search)
"mon hoc c." » "mon coc c." (Expand Search), "mon khoac c." (Expand Search), "mong hoac c." (Expand Search), "mon heoc c." (Expand Search), "mon _oc c." (Expand Search), "kon hoc c." (Expand Search), "mon hoc co." (Expand Search), "mon hoc ca." (Expand Search), "mon hoc ac." (Expand Search)
"mon h c." » "mon he c." (Expand Search), "mon _ c." (Expand Search), "kon h c." (Expand Search)

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: (("mon h c.") OR ((("mon ho c.") OR ("mon hoc c."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"mon h c.\") OR (((\"mon ho c.\") OR (\"mon hoc c.\"))))".
• Removing quotes may allow a broader search: (( mon h c. ) OR ((( mon ho c. ) OR ( mon hoc c. )))).
• Adding a wildcard symbol may retrieve word variants: (("mon h c.") OR ((("mon ho c.") OR ("mon hoc c."))))*.