Perhaps you should try some spelling variations:
bieu hien » dieu hien, dieu khien, bien phien
hien bach » vien bach, thien hach, hien hanh
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
nang xa » lang xa, nang ma, mang xa
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc manh
cau tre » cau tren, cau treo, cau tra
va cau » van cau, va cac, va dau

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 ty ((nang xa) or (nang x)) hoi. bieu hien bach ((xuc van) OR (duc van)) hang va cau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang xa) OR (nang x)) hoi. bieu hien bach ((xuc van) OR (duc van)) hang va cau tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((nang xa) or (nang x)) hoi. bieu hien bach ((xuc van) OR (duc van)) hang va cau tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((nang xa) or (nang x)) hoi. bieu hien bach ((xuc van) OR (duc van)) hang va cau tre*.