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

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 (dang xay)) hoi. hieu ve cam 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 (dang xay)) hoi. hieu ve cam duc van hanh thai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sai ky ((dang xa) OR (dang xay)) hoi. hieu ve cam duc van hanh thai cua tre*.