Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
va triet » va thiet, va trien, ve triet
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
cam tuc » cam tu, nam thuc, dam thuc
hanh di » hanh vi, hang di, danh di
hanh de » hanh ve, hanh kem

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 ty xang xa hoi. lieu va ((cam tuc) OR (cam xuc)) va ((hanh di) or (hanh de)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ty xang xa hoi. lieu va ((cam tuc) OR (cam xuc)) va ((hanh di) OR (hanh de)) va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ty xang xa hoi. lieu va ((cam tuc) OR (cam xuc)) va ((hanh di) or (hanh de)) va triet".
• Adding a wildcard symbol may retrieve word variants: thuat sach ty xang xa hoi. lieu va ((cam tuc) OR (cam xuc)) va ((hanh di) or (hanh de)) va triet*.