Perhaps you should try some spelling variations:
phap thuc » phap thu, phap hoc, phap tu
doc sach » hoc sach, toc sach, nuoc sach
vu sach » vu bach, su sach, vu khach
ky dang » ky nang, ky danh
xay hoi » tay hoi, cay phoi, gay thoi
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
vi cua » vai cua, di cua
cua te » cua tu
v phap » va phap, ve phap, v pham
hieu v » hieu va, hieu ve, hieu 2

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (doc sach)) ky dang ((xay hoi) or (xa hoi)). hieu v phap thuc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (doc sach)) ky dang ((xay hoi) OR (xa hoi)). hieu v phap thuc va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (doc sach)) ky dang ((xay hoi) or (xa hoi)). hieu v phap thuc va hanh vi cua te*.