Perhaps you should try some spelling variations:
duc manh » suc manh, duc anh, duc minh
hieu ve » hieu va, hieu van
hanh ve » hanh vi, hanh va, hanh kem
xuc van » duc van, luc van, xuc ban
cua tre » cua te, cuu tre, cua triet
hoa hoi » khoa hoi, hoa hoc, hoa doi
ky tang » ky nang, ky dang, kho tang
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam
ha hoi » ha noi, xa hoi, va hoi
ve cua » le cua, de cua, te cua
tu sac » tu sach, tu cac, tu san

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky tang ((ha hoi) OR (hoa hoi)). hieu ve cam ((xuc van) or (duc manh)) hanh ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky tang ((ha hoi) OR (hoa hoi)). hieu ve cam ((xuc van) OR (duc manh)) hanh ve cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky tang ((ha hoi) OR (hoa hoi)). hieu ve cam ((xuc van) or (duc manh)) hanh ve cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky tang ((ha hoi) OR (hoa hoi)). hieu ve cam ((xuc van) or (duc manh)) hanh ve cua tre*.