Perhaps you should try some spelling variations:
so sanh » do sanh
ty nang » ty xang, ty hang, ly nang
duc van » duc va, duc tan, duc manh
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
va dau » va dao
di cua » dai cua, doi cua, de cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh ((ty nang) OR (ky nang)) ma hoi. lieu va dau ((duc van) or (thuc vat)) hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh ((ty nang) OR (ky nang)) ma hoi. lieu va dau ((duc van) OR (thuc vat)) hanh di cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh ((ty nang) OR (ky nang)) ma hoi. lieu va dau ((duc van) or (thuc vat)) hanh di cua tre*".