Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va danh, ban hanh
su tien » su kien, su hien, tu tieng
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
va cap » va cac, va dap, va cao
vi su » va su, ve su, ki su

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y nang ma hoi. lieu va cap cuu ((va hanh) OR (va thanh)) vi su tien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang ma hoi. lieu va cap cuu ((va hanh) OR (va thanh)) vi su tien".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ma hoi. lieu va cap cuu ((va hanh) OR (va thanh)) vi su tien*.