Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
van hanh » van thanh, ban hanh, van anh
cham duc » pham duc, cham soc, pham duy
hieu ve » hieu va, hieu van
duc van » duc va, duc tan, duc manh
ve cham » va cham, ve chat, vu cham
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
su dai » sau dai, si dai, su tai
su sai » su tai, su hai, su mai

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) or (su dai)) ky ((nang xa) OR (lang xa)) hoi. hieu ve cham duc van hanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sai) OR (su dai)) ky ((nang xa) OR (lang xa)) hoi. hieu ve cham duc van hanh thai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sai) or (su dai)) ky ((nang xa) OR (lang xa)) hoi. hieu ve cham duc van hanh thai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sai) or (su dai)) ky ((nang xa) OR (lang xa)) hoi. hieu ve cham duc van hanh thai cua tre*.