Perhaps you should try some spelling variations:
thanh cac » hanh cac, thanh bac, thanh ca
hoc cac » hoc cao
cao hoi » cau hoi, co hoi, cao hoc
hieu va » lieu va, hieu qua
duoc va » duc va, duoc ma, duong va
cac cua » cach cua, cac qua, ca cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
va nam » van nam, ha nam, va nay
cac y » cac ky, cac _, cap y

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc cac y nang cao hoi. hieu va nam ((duoc va) or (nuoc va)) thanh cac cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc cac y nang cao hoi. hieu va nam ((duoc va) OR (nuoc va)) thanh cac cua tre.
• Adding a wildcard symbol may retrieve word variants: hoc cac y nang cao hoi. hieu va nam ((duoc va) or (nuoc va)) thanh cac cua tre*.