Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
vu sach » vu bach, su sach, vu khach
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 cu » cua chu, cua cau, cua co
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: vu sach ty lang xa hoi. hieu vu cham soc va hanh thai ((cua cu) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty lang xa hoi. hieu vu cham soc va hanh thai ((cua cu) OR (cua su)).
• Adding a wildcard symbol may retrieve word variants: vu sach ty lang xa hoi. hieu vu cham soc va hanh thai ((cua cu) or (cua su))*.