Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hien bach » vien bach, hien hanh, dien sach
danh tu » anh tu, doanh thu
danh du » danh dau, dinh du, anh du
tuoc va » thuoc va, nuoc va, duoc va
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet

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