Perhaps you should try some spelling variations:
sach tao » sach dao, sach bao, sach tai
tao nano » tao nganh, cao nang, tao cao
nano cau » nang cau, bang cau, nano va
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
cua tre » cua te, cua triet, dua tren
xuc van » duc van, luc van, vuc van
ve cham » va cham, ve chat, vu cham
cuu tre » cau tren, cau treo
ve cam » ve cac, va cam, ve cai

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 tao nano cau hoi. hieu ((ve cam) OR (ve cham)) xuc van hanh vi ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach tao nano cau hoi. hieu ((ve cam) OR (ve cham)) xuc van hanh vi ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: su sach tao nano cau hoi. hieu ((ve cam) OR (ve cham)) xuc van hanh vi ((cua tre) OR (cuu tre))*.