Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hien bach » vien bach, hien hanh, dien sach
so sach » so sanh, bo sach, co sach
tuoc va » thuoc va, nuoc va, duoc va
nang xa » lang xa, nang ma, mang xa
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
sach ky » sac ky, sach y, sach ty
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky ((nang xa) or (nang x)) hoi. hieu ((hien bach) OR (thien hach)) tuoc va danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky ((nang xa) OR (nang x)) hoi. hieu ((hien bach) OR (thien hach)) tuoc va danh vi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky ((nang xa) or (nang x)) hoi. hieu ((hien bach) OR (thien hach)) tuoc va danh vi cua te*".