Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
dua tren » dung tren
tinh lai » tinh lao, tinh hai, minh lai
cham xuc » cam xuc, chat xuc, cham soc
lang hai » lang chai, lang thai, lang ha
cau tren » cu tren, dau tren, ca tren
hai hoi » dai hoi, hai moi, hai hai
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
sach ty » sach y, sach tu, sach thu
va tinh » may tinh
ty lang » tay lang, ty xang, ty hang
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: toc sach ty lang hai hoi. hieu ve cham xuc va tinh lai ((dua tren) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty lang hai hoi. hieu ve cham xuc va tinh lai ((dua tren) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: toc sach ty lang hai hoi. hieu ve cham xuc va tinh lai ((dua tren) or (cau tren))*.