Perhaps you should try some spelling variations:
phap thuc » phap thu, phap hoc, phap tu
va thanh » gia thanh, ban thanh, va tinh
thanh de » hanh de, thanh ve, thanh do
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
lang ha » long ha
va phap » va phat, ban phap
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
de cua » le cua, te cua, dieu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky ((nang xa) or (lang ha)) hoi. lieu va phap thuc va thanh de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang xa) OR (lang ha)) hoi. lieu va phap thuc va thanh de cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang xa) or (lang ha)) hoi. lieu va phap thuc va thanh de cua tre*.