Perhaps you should try some spelling variations:
luoc can » luc canh, hoc can, luoc dai
duc manh » suc manh, duc anh, duc minh
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
te san » te ban, ke san, tu san
ve cac » va cac, vien cac
san ky » sang ky, van ky, dan ky
vi cua » vai cua, di cua

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

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