Perhaps you should try some spelling variations:
bieu thien » bieu hien, dieu khien, bien phien
thien hach » thien thanh, hien hanh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
tuoc va » thuoc va, nuoc va, duoc va
doi cua » dai cua
hoi cua » hoi chuc

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. bieu thien hach ((tuoc va) or (duc va)) danh ((doi cua) or (hoi cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. bieu thien hach ((tuoc va) OR (duc va)) danh ((doi cua) OR (hoi cua)) tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. bieu thien hach ((tuoc va) or (duc va)) danh ((doi cua) or (hoi cua)) tre*.