Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
cham xuc » cam xuc, chat xuc, cham soc
va thanh » gia thanh, ban thanh, va tinh
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
mai hoi » mai khoi, dai hoi, lai hoi
hieu tu » chieu tu, hieu tuc, hien tu
tu cham » toc cham, thi cham
va hanh » va danh, ban hanh, dao hanh
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 nang mai hoi. hieu tu cham xuc ((((va hanh) or (va thanh))) or (van hanh)) tri va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang mai hoi. hieu tu cham xuc ((((va hanh) OR (va thanh))) OR (van hanh)) tri va thiet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang mai hoi. hieu tu cham xuc ((((va hanh) or (va thanh))) or (van hanh)) tri va thiet*.