Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
va thanh » gia thanh, ban thanh, va tinh
ban hanh » ban hang
ban danh » ban doanh, ban dan, van danh
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
ve cam » ve cham, ve cac, va cam
vi cua » vai cua, di cua

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 danh) OR (ban hanh)) vi cua tre~.
• 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 danh) OR (ban hanh)) vi cua tre.
• 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 danh) OR (ban hanh)) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: thuat sach ky lang xa hoi. hieu ((ve cam) or (va thanh)) cuc ((ban danh) OR (ban hanh)) vi cua tre*.