Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
cua tre » cua te, cuu tre, cua triet
ky mang » ky nang, ke mang, ky dang
may hoi » may thoi, tay hoi, may hmi
danh di » danh du, xanh di, danh dien
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu van
va danh » va dinh, va dan, va hanh
hieu va » lieu va, hieu qua
di cua » dai cua, doi cua, de cua
te san » te ban, ke san, tu san
san ky » sang ky, van ky, dan ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: te san ky mang ((may hoi) or (mai hoi)). ((hieu ve) OR (hieu va)) cham duc va danh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te san ky mang ((may hoi) OR (mai hoi)). ((hieu ve) OR (hieu va)) cham duc va danh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te san ky mang ((may hoi) or (mai hoi)). ((hieu ve) OR (hieu va)) cham duc va danh di cua tre".
• Adding a wildcard symbol may retrieve word variants: te san ky mang ((may hoi) or (mai hoi)). ((hieu ve) OR (hieu va)) cham duc va danh di cua tre*.