Perhaps you should try some spelling variations:
loai tren » la tren, thai tren
thu sach » tu sach, thuat sach, thuoc sach
qua kham » qua cham, qua khai, qua khao
kham xuc » kham xung, kham cuoc, cam xuc
van hanh » van thanh, ban hanh, van anh
cau tren » cu tren, dau tren, ca tren
xuc van » duc van, luc van, vuc van
y danh » ky danh, ly danh, 1 danh
ky anh » ky danh, ly anh, ty anh

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((y danh) or (ky anh)) xa hoi. hieu qua kham xuc van hanh vi ((cau tren) or (loai tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((y danh) OR (ky anh)) xa hoi. hieu qua kham xuc van hanh vi ((cau tren) OR (loai tren)).
• Adding a wildcard symbol may retrieve word variants: thu sach ((y danh) or (ky anh)) xa hoi. hieu qua kham xuc van hanh vi ((cau tren) or (loai tren))*.