Perhaps you should try some spelling variations:
hanh tri » thanh tri, hanh tai, hanh trinh
ban hanh » ban hang
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
cua tre » cuu tre, cua triet, dua tren
duc ban » duc tan, duc van, dua ban
su tai » su thi, tu tai
cua te » cua tu
va cam » va cham, va cac, va cao
tai ky » thai ky, trai ky, sai ky
ve cam » ve cham, ve cac, 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 tai ky dang xa hoi. hieu ((ve cam) OR (va cam)) duc ban hanh tri ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su tai ky dang xa hoi. hieu ((ve cam) OR (va cam)) duc ban hanh tri ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su tai ky dang xa hoi. hieu ((ve cam) OR (va cam)) duc ban hanh tri ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: su tai ky dang xa hoi. hieu ((ve cam) OR (va cam)) duc ban hanh tri ((cua tre) or (cua te))*.