Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
van hanh » van thanh, ban hanh, van anh
thai cua » than cua, tai cuc, tri cua
ky danh » ky anh, ky dang
danh xa » danh ca, dinh xa, canh xa
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet
su sai » su tai, su hai, su dai
sai ky » sac ky
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ky danh xa hoi. hieu ((ve cam) or (va cam)) duc van hanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky danh xa hoi. hieu ((ve cam) OR (va cam)) duc van hanh thai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sai ky danh xa hoi. hieu ((ve cam) or (va cam)) duc van hanh thai cua tre*.