Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
cham xuc » cam xuc, chat xuc, cham soc
va cham » va chat, va tham
sach ky » sach y, sach ty, sach kem
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
sac ky » cac ky, sai ky
xuc va » duc va, tuc va, luc 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 ((sach ky) OR (sac ky)) nang ma hoi. hieu va cham xuc va ((hanh tai) or (hanh vi)) va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang ma hoi. hieu va cham xuc va ((hanh tai) OR (hanh vi)) va thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sac ky)) nang ma hoi. hieu va cham xuc va ((hanh tai) or (hanh vi)) va thiet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sac ky)) nang ma hoi. hieu va cham xuc va ((hanh tai) or (hanh vi)) va thiet*.