Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
doan dau » doan dieu, phan dau, doan va
danh dau » lanh dao, hang dau, danh tu
te sach » toc sach
cua tre » cuu tre, cua triet, dua tren
sach ky » sac ky, sach y, sach ty
thuc va » thuc vat, thuc dan, thuc day
vu pham » su pham, vi pham, vu kham
hieu vu » hieu va, hieu ve, hieu su
nang ma » tang ma, sang ma, nang cao
cua te » cua tu

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 hoa. hieu vu pham thuc va ((doan dau) or (danh dau)) ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoa. hieu vu pham thuc va ((doan dau) OR (danh dau)) ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ma hoa. hieu vu pham thuc va ((doan dau) or (danh dau)) ((cua tre) OR (cua te))*".