Perhaps you should try some spelling variations:
hanh lam » thanh lap, hanh kem, hanh va
su sach » so sach, vu sach
tang ma » tang van
dieu vu » dien vu, dieu va, dieu cua
va hanh » van hanh, va thanh, va danh
lam cua » nam cua, lam chat
cua tre » cua te, cuu tre, cua triet
soc va » hoc va, loc va, doc va

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 thieu ((tang ma) OR (mang may)) hoa. ((dieu vu) or (hieu qua)) cham soc va hanh lam cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thieu ((tang ma) OR (mang may)) hoa. ((dieu vu) OR (hieu qua)) cham soc va hanh lam cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thieu ((tang ma) OR (mang may)) hoa. ((dieu vu) or (hieu qua)) cham soc va hanh lam cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach thieu ((tang ma) OR (mang may)) hoa. ((dieu vu) or (hieu qua)) cham soc va hanh lam cua tre*.