Perhaps you should try some spelling variations:
cham xuc » chat xuc, cham soc, pham duc
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
ma hoi » mai hoi, xa hoi, ma hoa
vi va » vi van, vai va, vu 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 nang ma hoi. hieu va ((cham xuc) OR (cam xuc)) ((va danh) or (van hanh)) vi va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ma hoi. hieu va ((cham xuc) OR (cam xuc)) ((va danh) OR (van hanh)) vi va thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang ma hoi. hieu va ((cham xuc) OR (cam xuc)) ((va danh) or (van hanh)) vi va thiet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ma hoi. hieu va ((cham xuc) OR (cam xuc)) ((va danh) or (van hanh)) vi va thiet*.