Perhaps you should try some spelling variations:
hanh than » hanh han, hanh nhan, hanh phan
duc manh » suc manh, duc anh, duc minh
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu va, hieu van
duc van » duc va, duc tan, duc phan
cua tre » cuu tre, cua triet, dua tren
su sai » su tai, su hai, su dai
sai ky » sac ky
ve cac » va cac, vien cac
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 ve cac ((duc van) OR (duc manh)) hanh than ((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 ve cac ((duc van) OR (duc manh)) hanh than ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky dang xa hoi. hieu ve cac ((duc van) OR (duc manh)) hanh than ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: su sai ky dang xa hoi. hieu ve cac ((duc van) OR (duc manh)) hanh than ((cua tre) or (cua te))*.