Perhaps you should try some spelling variations:
hien bach » vien bach, thien hach, hien hanh
hieu hien » bieu hien, dieu hien, chieu chien
bach tuoc » sach duoc, sach nuoc
sach ty » sach tu, sach thu, xach tay
nang xa » nang x, lang xa, nang ma
tuoc va » thuoc va, nuoc va, duoc va
va tinh » may tinh
tinh vi » trinh vi, tinh voi, tinh va
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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: so ((sach ty) OR (sach y)) nang xa hoi. hieu hien bach tuoc va tinh vi cua tu~.
• Adding a wildcard symbol may retrieve word variants: so ((sach ty) or (sach y)) nang xa hoi. hieu hien bach tuoc va tinh vi cua tu*.