Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
pham thuc » phap thuc, pham chuc, nham thuc
vat hanh » vat thanh, van hanh, va hanh
sach ky » sac ky, sach y, sach ty
nang co » nang doc, nang noi, nang hoc
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
vi cua » vai cua, di cua
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: thuoc sach ky ((nang co) OR (nang cao)) hoi. hieu ve pham thuc vat hanh vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky ((nang co) OR (nang cao)) hoi. hieu ve pham thuc vat hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky ((nang co) OR (nang cao)) hoi. hieu ve pham thuc vat hanh vi cua te*.