Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
thu sach » tu sach, thuat sach, thuoc sach
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
nang co » nang cao, nang doc, nang noi
y nang » ky nang, ly nang, v nang
co hoi » co hoc, co loi
te cua » tue cua, le cua, de 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 y nang co hoi. hieu van pham thuc dan hanh ((dai cua) or (te cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang co hoi. hieu van pham thuc dan hanh ((dai cua) OR (te cua)) te.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang co hoi. hieu van pham thuc dan hanh ((dai cua) or (te cua)) te*.