Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
ty lang » tay lang, ty xang, ty hang
lang xa » lang ha, dang xay, lang van
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
va hanh » van hanh, va thanh, va danh
soc va » hoc va, loc va, doc va
cua tu » cua tuc, cua cu, cua te
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty lang xa hoi. hieu vu cham soc va hanh thai ((cua tu) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty lang xa hoi. hieu vu cham soc va hanh thai ((cua tu) OR (cua su)).
• Adding a wildcard symbol may retrieve word variants: so sach ty lang xa hoi. hieu vu cham soc va hanh thai ((cua tu) or (cua su))*.