Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
thanh va » thanh van, hanh va, thanh ha
su sach » so sach, vu sach
dang xa » dang xay, dang ha, dang va
lang xa » lang ha, dang xay, lang van
van cam » van nam, van lam, van cau
xuc va » tuc va, luc va, xac va
va cua » va chua, via cua, ca cua
cua tu » cua tuc, cua su, cua cu

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 y ((dang xa) or (lang xa)) hoi. hieu van cam ((xuc va) or (duc va)) thanh va cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((dang xa) OR (lang xa)) hoi. hieu van cam ((xuc va) OR (duc va)) thanh va cua tu.
• Adding a wildcard symbol may retrieve word variants: su sach y ((dang xa) or (lang xa)) hoi. hieu van cam ((xuc va) or (duc va)) thanh va cua tu*.