Perhaps you should try some spelling variations:
sach tien » sach tren, sach thieu
dua tren » dung tren
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
tinh vi » trinh vi, tinh voi, tinh va
va tinh » may tinh
cau xuc » cam xuc, cau luc, cau truc
van cau » van dau, van hau, van chat
lang xa » lang ha, dang xay, lang van
bang xa » bang va, mang xa, ang xa
cuu tre » cua tre, cau tren, cau treo
xuc va » duc va, tuc va, luc va

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 tien ((bang xa) or (lang xa)) hoi. hieu van cau xuc va tinh vi ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tien ((bang xa) OR (lang xa)) hoi. hieu van cau xuc va tinh vi ((dua tren) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: su sach tien ((bang xa) or (lang xa)) hoi. hieu van cau xuc va tinh vi ((dua tren) or (cuu tre))*.