Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
pham thuc » phap thuc, pham chuc, nham thuc
thuc day » thuc dan, thuc vat
day hang » dat hang, dai hang, day nang
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

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky nang co hoc. hieu ve pham thuc day hang ((hoi cua) OR (hoi chuc)) te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ky nang co hoc. hieu ve pham thuc day hang ((hoi cua) OR (hoi chuc)) te".
• Adding a wildcard symbol may retrieve word variants: thuat sach ky nang co hoc. hieu ve pham thuc day hang ((hoi cua) OR (hoi chuc)) te*.