Perhaps you should try some spelling variations:
pham cuc » pham chuc, pham duc, pham cua
vanh dai » van dai, vanh tai, lanh dao
hanh dai » hanh tai, hanh dao, thanh dat
tu sach » thu sach, su sach, te sach
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
cam cuc » cam xuc, cham cuu
hieu ve » hieu va, hieu van
cao hoi » cau hoi, co hoi, cao hoc

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 ky nang cao hoi. hieu ve ((cam cuc) OR (pham cuc)) ban ((hanh dai) or (vanh dai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang cao hoi. hieu ve ((cam cuc) OR (pham cuc)) ban ((hanh dai) OR (vanh dai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang cao hoi. hieu ve ((cam cuc) OR (pham cuc)) ban ((hanh dai) or (vanh dai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang cao hoi. hieu ve ((cam cuc) OR (pham cuc)) ban ((hanh dai) or (vanh dai)) cua tre*.