Perhaps you should try some spelling variations:
manh hanh » xanh hanh, danh thanh, minh thanh
hanh hai » thanh hai, nhanh hai, hang hai
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
hai cua » thai cua, dai cua, hoi cua
cam suc » cam xuc, cao suc, cham soc
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu van
ty nang » ky nang, ty hang, ly nang

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