Perhaps you should try some spelling variations:
phan dau » phan tu, hang dau
doan dau » doan dieu, doan va, van dau
te sach » toc sach
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
su kham » su pham, vu kham, so kham
hieu su » hieu sau, tieu su, hieu so
nang ma » tang ma, sang ma, nang cao
tuc va » truc va, tuc xa, duc va
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang ma hoi. hieu su kham ((tuc va) or (thuc va)) ((doan dau) OR (phan dau)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. hieu su kham ((tuc va) OR (thuc va)) ((doan dau) OR (phan dau)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ma hoi. hieu su kham ((tuc va) or (thuc va)) ((doan dau) OR (phan dau)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. hieu su kham ((tuc va) or (thuc va)) ((doan dau) OR (phan dau)) cua tre*.