Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
ban thanh » ban hanh, ban hang
xach tay » canh tay
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
thuc ban » thuoc ban, thuc dan, thu ban
thanh ky » hanh ky, than ky, thanh tay
tu xach » tu cach, tu hach, tu sach
lang xa » dang xay, lang van
lang ha » long ha
ky cua » ly cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu xach tay ((lang xa) or (lang ha)) hoi. hieu van pham thuc ban thanh ky cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu xach tay ((lang xa) OR (lang ha)) hoi. hieu van pham thuc ban thanh ky cua vat.
• Adding a wildcard symbol may retrieve word variants: tu xach tay ((lang xa) or (lang ha)) hoi. hieu van pham thuc ban thanh ky cua vat*.