Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, ban thanh, va tinh
ban hanh » ban hang
lang xa » lang ha, dang xay, lang van
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
cuc ban » cua ban, cac ban, cuu ban
cua tre » cua te, cuu tre, dua tren
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky lang xa hoi. hieu ((ve cam) or (va thanh)) cuc ban hanh vi ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky lang xa hoi. hieu ((ve cam) OR (va thanh)) cuc ban hanh vi ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ky lang xa hoi. hieu ((ve cam) or (va thanh)) cuc ban hanh vi ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: thuat sach ky lang xa hoi. hieu ((ve cam) or (va thanh)) cuc ban hanh vi ((cua tre) OR (cua triet))*.