Perhaps you should try some spelling variations:
duc manh » suc manh, duc anh, duc tan
duc minh » duc anh
luoc can » luc canh, hoc can, luoc dai
hieu ve » hieu va, hieu van
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve cac » va cac, vien cac
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang x hoi. hieu ve cac ((((duc manh) OR (duc minh))) or (luoc can)) hanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang x hoi. hieu ve cac ((((duc manh) OR (duc minh))) OR (luoc can)) hanh vi cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky nang x hoi. hieu ve cac ((((duc manh) OR (duc minh))) or (luoc can)) hanh vi cua vat".
• Adding a wildcard symbol may retrieve word variants: te sac ky nang x hoi. hieu ve cac ((((duc manh) OR (duc minh))) or (luoc can)) hanh vi cua vat*.