Perhaps you should try some spelling variations:
manh hanh » xanh hanh, danh thanh, minh thanh
hieu van » hieu va, thien van, lieu va
hanh lai » hanh lam, hanh tai, thanh lap
te sach » toc sach
lai cua » dai cua, hai cua, lai chau
cam suc » cam xuc, cao suc, cham soc
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va
ty nang » ky nang, ty xang, ty hang
ma hoi » mai hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty nang ((ma hoi) or (xa hoi)). ((hieu ve) OR (hieu van)) cam suc manh hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang ((ma hoi) OR (xa hoi)). ((hieu ve) OR (hieu van)) cam suc manh hanh lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang ((ma hoi) or (xa hoi)). ((hieu ve) OR (hieu van)) cam suc manh hanh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang ((ma hoi) or (xa hoi)). ((hieu ve) OR (hieu van)) cam suc manh hanh lai cua tre*.