Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
thuat san » thuat toan, thuat song, thuat lanh
hien cac » thien cac, vien cac, hieu cac
van hanh » van thanh, ban hanh, van anh
cac luc » cau luc, coc luc, cac nuoc
vai cua » dai cua, hai cua, lai cua
va hanh » va thanh, va danh, ban hanh
tu cach » tu cac
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (thuat san)) ky nang ma hoi. hieu hien cac luc ((va hanh) or (van hanh)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thuat san)) ky nang ma hoi. hieu hien cac luc ((va hanh) OR (van hanh)) vai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thuat san)) ky nang ma hoi. hieu hien cac luc ((va hanh) or (van hanh)) vai cua tre*.