Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
pham thuc » phap thuc, pham chuc, nham thuc
thu sach » tu sach, thuoc sach, thu hoach
vat hanh » vat thanh, van hanh, va hanh
ve pham » vi pham, v pham, ve phan
doi cua » dai cua, hoi cua
hieu ve » hieu va, hieu van
nang co » nang cao, nang doc, nang noi
co hoi » co hoc, co loi
di cua » dai cua, de cua, do cua

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) or (thuat sach)) ky nang co hoi. hieu ve pham thuc vat hanh ((di cua) OR (doi cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) ky nang co hoi. hieu ve pham thuc vat hanh ((di cua) OR (doi cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (thuat sach)) ky nang co hoi. hieu ve pham thuc vat hanh ((di cua) OR (doi cua)) te".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuat sach)) ky nang co hoi. hieu ve pham thuc vat hanh ((di cua) OR (doi cua)) te*.