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
cua tre » cua te, cuu tre, cua triet
ve cham » va cham, ve chat, vu cham
dang xa » dang xay, dang ha, dang va
lang xa » lang ha, dang xay, lang van
duc van » duc va, duc tan, duc manh
su sai » su tai, su hai, su dai
sai ky » sac ky
ve cam » ve cac, va cam, ve cai

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