Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
thu sach » tu sach, thuat sach, thuoc sach
vat hanh » vat thanh, van hanh, nhat hanh
va thanh » gia thanh, ban thanh, va tinh
sach ky » sac ky, sach y, sach ty
nang co » nang cao, nang doc, nang noi
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
va hanh » van hanh, va danh, ban hanh
co hoi » co hoc, co loi
di cua » dai cua, doi cua, de 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: thu sach ky nang co hoi. hieu ve pham thuc ((vat hanh) or (((va hanh) OR (va thanh)))) di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang co hoi. hieu ve pham thuc ((vat hanh) OR (((va hanh) OR (va thanh)))) di cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang co hoi. hieu ve pham thuc ((vat hanh) or (((va hanh) OR (va thanh)))) di cua te".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang co hoi. hieu ve pham thuc ((vat hanh) or (((va hanh) OR (va thanh)))) di cua te*.