Perhaps you should try some spelling variations:
hieu thien » hieu hien, chieu chien, dieu khien
thien hach » thien thanh, hien hanh
danh vi » hanh vi, dinh vi, danh di
sach ky » sac ky, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
vi cua » vai cua, di cua
cua te » cua tu
du va » dau va, tu va, vu va
su va » su van, tu va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sach y)) nang xa hoi. hieu thien hach ((du va) OR (su va)) danh vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) OR (sach y)) nang xa hoi. hieu thien hach ((du va) or (su va)) danh vi cua te~".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) OR (sach y)) nang xa hoi. hieu thien hach ((du va) or (su va)) danh vi cua te*.