Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van hanh » van thanh, ban hanh, van anh
hoc viet » hoc hien
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
va hanh » va thanh, va danh, ban hanh
ma hoi » mai hoi, xa hoi, ma hoa
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky nang ma hoi. lieu va cam xuc ((va hanh) OR (van hanh)) dai ((so viet) or (hoc viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang ma hoi. lieu va cam xuc ((va hanh) OR (van hanh)) dai ((so viet) OR (hoc viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ky nang ma hoi. lieu va cam xuc ((va hanh) OR (van hanh)) dai ((so viet) or (hoc viet))".
• Adding a wildcard symbol may retrieve word variants: thuat sach ky nang ma hoi. lieu va cam xuc ((va hanh) OR (van hanh)) dai ((so viet) or (hoc viet))*.