Perhaps you should try some spelling variations:
hanh thuc » nhanh thuc, hanh thuoc, hanh phuc
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
va thanh » gia thanh, ban thanh, le thanh
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
va tinh » may tinh
cua tre » cua te, cuu tre, cua triet
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ky lang xa hoi. hieu van hanh thuc ((va thanh) or (va tinh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky lang xa hoi. hieu van hanh thuc ((va thanh) OR (va tinh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: vu sac ky lang xa hoi. hieu van hanh thuc ((va thanh) or (va tinh)) vi cua tre*.