Perhaps you should try some spelling variations:
dau tren » dau tien, dat tren, dau tieng
va thanh » gia thanh, ban thanh, va tinh
va hanh » van hanh, va danh, ban hanh
tu sach » thu sach, su sach, te sach
cau xuc » cau luc, cau truc, chat xuc
hieu va » lieu va, hieu qua
mang xa » lang xa, mang may, dang xay
y mang » cay mang
vi dau » vi dai, va dau, bi dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y mang xa hoi. hieu va ((cau xuc) or (cam xuc)) ((va hanh) OR (va thanh)) vi dau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y mang xa hoi. hieu va ((cau xuc) OR (cam xuc)) ((va hanh) OR (va thanh)) vi dau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y mang xa hoi. hieu va ((cau xuc) or (cam xuc)) ((va hanh) OR (va thanh)) vi dau tren".
• Adding a wildcard symbol may retrieve word variants: tu sach y mang xa hoi. hieu va ((cau xuc) or (cam xuc)) ((va hanh) OR (va thanh)) vi dau tren*.