Perhaps you should try some spelling variations:
chieu chien » thien chien, hieu hien
chien bach » vien bach, chien dich, thien hach
su sach » so sach, vu sach
duoc va » nuoc va, duc va, duoc ma
doi cua » dai cua, hoi cua
sach ky » sac ky, sach y, sach ty
tuoc va » thuoc va, nuoc va, tuc va
nang xa » nang x, lang xa, nang ma
di cua » dai cua, de cua, do 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 hoi. chieu chien bach ((tuoc va) or (duoc va)) danh ((di cua) OR (doi cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. chieu chien bach ((tuoc va) OR (duoc va)) danh ((di cua) OR (doi cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. chieu chien bach ((tuoc va) or (duoc va)) danh ((di cua) OR (doi cua)) tre".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. chieu chien bach ((tuoc va) or (duoc va)) danh ((di cua) OR (doi cua)) tre*.