Perhaps you should try some spelling variations:
hien bach » vien bach, thien hach, hien hanh
dieu hien » dieu khien, dieu kien, bieu hien
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » lang xa, nang ma, mang xa
luc van » luoc van, luu van, duc van
vuc van » duc van, thuc van, chuc van
cuu tre » cua tre, cau tren, cau treo
va cuu » va cau, va chu, va huu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky ((nang xa) or (nang x)) hoi. dieu hien bach ((luc van) or (vuc van)) hang va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang xa) OR (nang x)) hoi. dieu hien bach ((luc van) OR (vuc van)) hang va cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang xa) or (nang x)) hoi. dieu hien bach ((luc van) or (vuc van)) hang va cuu tre*.