Perhaps you should try some spelling variations:
cac thuc » cach thuc, cac thu, can thuc
vat danh » va danh, van danh, luat danh
danh dai » danh dau, danh di, danh sai
nang xa » lang xa, nang ma, mang xa
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
sinh y » sinh ly
ve cac » va cac, vien cac

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

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