Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
sang ky » sang kyo, dang ky, tang ky
cao hoa » cao hoat, cao khoa, cau hoa
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
san ky » van ky, dan ky, ban ky
xuc va » tuc va, luc va, xac va
vai va » mai va, dai va, hai va
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((san ky) OR (sang ky)) nang cao hoa. hieu ve chat ((xuc va) or (duc va)) hanh vai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((san ky) OR (sang ky)) nang cao hoa. hieu ve chat ((xuc va) OR (duc va)) hanh vai va thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((san ky) OR (sang ky)) nang cao hoa. hieu ve chat ((xuc va) or (duc va)) hanh vai va thiet".
• Adding a wildcard symbol may retrieve word variants: tu ((san ky) OR (sang ky)) nang cao hoa. hieu ve chat ((xuc va) or (duc va)) hanh vai va thiet*.