Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan
hieu va » lieu va, hieu qua
danh di » danh du, xanh di, danh dien
cua tre » cua te, cuu tre, cua triet
te sac » te sach, te cac, te san
ve cac » va cac, vien cac
va cam » va cham, va cac, va cao
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sac) or (ve cac)) ky nang x hoi. hieu va cam ((thuc vat) or (thuc dan)) danh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (ve cac)) ky nang x hoi. hieu va cam ((thuc vat) OR (thuc dan)) danh di cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sac) or (ve cac)) ky nang x hoi. hieu va cam ((thuc vat) or (thuc dan)) danh di cua tre*.