Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
su sach » so sach
va hanh » van hanh, va thanh, va danh
va cham » va chat, va tham
vu cham » vu kham, tu cham, qua cham
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
vu sach » vu bach, vu khach
doc va » duoc va, hoc va, duc va
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) OR (va cham)) doc va 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) OR (va cham)) doc va 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) OR (va cham)) doc va hanh thai cua tu".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ty lang xa hoi. hieu ((vu cham) OR (va cham)) doc va hanh thai cua tu*.