Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
van hanh » van thanh, ban hanh, van anh
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
duc van » duc va, duc tan, duc manh
cua tre » cuu tre, cua triet, dua tren
su sai » su tai, su hai, su dai
sai ky » sac ky
cua te » cua tu

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 hoi. hieu van pham duc van hanh thai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky dang xa hoi. hieu van pham duc van hanh thai ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: su sai ky dang xa hoi. hieu van pham duc van hanh thai ((cua tre) or (cua te))*.