Perhaps you should try some spelling variations:
hinh thai » sinh thai, tinh thai, dinh thi
hanh thai » nhanh thai, hanh tai, anh thai
sach tu » sach thu, cach tu, sach ty
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
lang xa » lang ha, dang xay, lang van
sach uu » sach luu, sach xu, sach dau
soc va » hoc va, loc va, doc 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: tu ((sach tu) or (sach uu)) lang xa hoi. hieu vu cham soc va ((hanh thai) OR (hinh thai)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach tu) OR (sach uu)) lang xa hoi. hieu vu cham soc va ((hanh thai) OR (hinh thai)) cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach tu) or (sach uu)) lang xa hoi. hieu vu cham soc va ((hanh thai) OR (hinh thai)) cua tu".
• Adding a wildcard symbol may retrieve word variants: tu ((sach tu) or (sach uu)) lang xa hoi. hieu vu cham soc va ((hanh thai) OR (hinh thai)) cua tu*.