Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van hanh » van thanh, ban hanh, van anh
dau tren » dau tien, dat tren, dau tieng
mang xa » lang xa, mang may, dang xay
hieu va » lieu va, hieu qua
cau xuc » cam xuc, cau truc, chat xuc
cau luc » cau truc, cau phuc
hanh va » hang va, hanh vi
y mang » cay mang
va dau » va dao

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 y mang xa hoi. hieu va ((cau xuc) or (cau luc)) van hanh va dau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y mang xa hoi. hieu va ((cau xuc) OR (cau luc)) van hanh va dau tren.
• Adding a wildcard symbol may retrieve word variants: thuat sach y mang xa hoi. hieu va ((cau xuc) or (cau luc)) van hanh va dau tren*.