Perhaps you should try some spelling variations:
phan thuc » nhan thuc, phap thuc, pham thuc
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang co » nang cao, nang doc, nang noi
hieu ve » hieu va, hieu van
ve phan » va phan, ke phan, ve phat
co hoi » co hoc, co loi
di cua » dai cua, doi cua, do cua
de cua » le cua, te cua, dieu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang co hoi. hieu ve phan thuc dan hanh ((di cua) OR (de cua)) te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang co hoi. hieu ve phan thuc dan hanh ((di cua) OR (de cua)) te".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang co hoi. hieu ve phan thuc dan hanh ((di cua) OR (de cua)) te*.