Perhaps you should try some spelling variations:
sach truc » cach thuc, sach tren, sach thu
truc nang » truc nano, tru nang, truc trang
thien van » thi van
dua tren » dung tren
ban hanh » ban hang
su sach » so sach, vu sach
cua tre » cuu tre, cua triet, cua thep
cac ban » cac dan, cac van, can ban
cam cac » ca cac, nam cac, cam chan
van cam » van nam, van lam, van cau
nang xa » nang x, lang xa, nang ma
cua te » cua tu

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 truc nang xa hoi. thien van cam cac ban hanh vi ((((cua tre) or (dua tren))) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach truc nang xa hoi. thien van cam cac ban hanh vi ((((cua tre) OR (dua tren))) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: su sach truc nang xa hoi. thien van cam cac ban hanh vi ((((cua tre) or (dua tren))) or (cua te))*.