Perhaps you should try some spelling variations:
manh hanh » xanh hanh, danh thanh, minh thanh
nhan cua » nhat cua, nhan luc, nhan su
than cua » thai cua, ban cua, gian cua
duc manh » suc manh, duc anh, duc minh
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
cao duc » dao duc, cao suc, giao duc
su sai » su tai, su dai, su mai
su hai » su tai
va cao » va cac, va co, va dao

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) OR (su hai)) ky tang xa hoi. hieu va cao duc manh hanh ((than cua) or (nhan cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sai) OR (su hai)) ky tang xa hoi. hieu va cao duc manh hanh ((than cua) OR (nhan cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sai) OR (su hai)) ky tang xa hoi. hieu va cao duc manh hanh ((than cua) or (nhan cua)) tre".
• Adding a wildcard symbol may retrieve word variants: ((su sai) OR (su hai)) ky tang xa hoi. hieu va cao duc manh hanh ((than cua) or (nhan cua)) tre*.