Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec cam » viec lam, viec cua, viec va
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
va hanh » va thanh, va danh, ban hanh
y lang » o lang, _ lang, tay lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y lang xa hoi. hieu viec cam xuc ((va hanh) OR (van hanh)) ((lai chau) or (dai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y lang xa hoi. hieu viec cam xuc ((va hanh) OR (van hanh)) ((lai chau) OR (dai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y lang xa hoi. hieu viec cam xuc ((va hanh) OR (van hanh)) ((lai chau) or (dai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: su sach y lang xa hoi. hieu viec cam xuc ((va hanh) OR (van hanh)) ((lai chau) or (dai cua)) triet*.