Perhaps you should try some spelling variations:
thai cua » than cua, tai cuc, tri cua
van hanh » van thanh, ban hanh, van anh
cham doc » cham soc, chat doc, chau doc
su sach » so sach
va hanh » va thanh, va danh, ban hanh
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
vu sach » vu bach, vu khach
cua tu » cua tuc, cua su, cua cu

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) or (vu sach)) ty lang xa hoi. hieu vu cham doc ((va hanh) OR (van hanh)) thai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ty lang xa hoi. hieu vu cham doc ((va hanh) OR (van hanh)) thai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) ty lang xa hoi. hieu vu cham doc ((va hanh) OR (van hanh)) thai cua tu".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ty lang xa hoi. hieu vu cham doc ((va hanh) OR (van hanh)) thai cua tu*.