Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
va triet » va trien, ve triet, cua triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hanh te » hanh tu, hanh ve, hanh de
ve cam » ve cham, ve cac, va cam
x hoi » xa hoi, o hoi, x ho
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang x hoi. hieu ((ve cam) OR (vien bach)) thuc dan hanh te ((va triet) OR (va thiet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. hieu ((ve cam) OR (vien bach)) thuc dan hanh te ((va triet) OR (va thiet))".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu ((ve cam) OR (vien bach)) thuc dan hanh te ((va triet) OR (va thiet))*.