Perhaps you should try some spelling variations:
sach tien » sach tren, sach thieu
tien tang » tien lang, tien tung, tien thanh
dua tren » dung tren
su sach » so sach, vu sach
cuu tre » cua tre, cau tren, cau treo
va cham » va chat, va tham
tang ma » mang may, tang van
ma hoi » mai hoi, xa hoi, ma hoa
luc va » duc va, tuc va, loc 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 tang ma hoi. lieu va cham ((luc va) or (tuc xa)) hanh vi ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tien tang ma hoi. lieu va cham ((luc va) OR (tuc xa)) hanh vi ((dua tren) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: su sach tien tang ma hoi. lieu va cham ((luc va) or (tuc xa)) hanh vi ((dua tren) or (cuu tre))*.