Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
sach ty » sach y, sach thu, xach tay
sach tu » sach thu, cach tu, sach uu
lang ha » long ha
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
va hanh » van hanh, va thanh, va danh
ha hoi » hoa hoi, ha noi, xa hoi
soc va » hoc va, loc va, doc va
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: tu ((sach ty) or (sach tu)) lang ha hoi. hieu vu cham soc va hanh thai cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach tu)) lang ha hoi. hieu vu cham soc va hanh thai cua su.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach tu)) lang ha hoi. hieu vu cham soc va hanh thai cua su*.