Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cac truc » cau truc, cac tru, cac trung
truc van » truc va, thuc van, truc ban
van tuan » van quan, van ban, anh tuan
tuan vai » tuan tai, trang vai, tuan khai
va trien » va truyen, va thiet, va tieng
va tuyen » va truyen, tac tuyen, ke tuyen
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach y nang ma hoi. lieu va cac truc van tuan vai ((va trien) OR (va tuyen))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach y nang ma hoi. lieu va cac truc van tuan vai ((va trien) OR (va tuyen))".
• Adding a wildcard symbol may retrieve word variants: thuoc sach y nang ma hoi. lieu va cac truc van tuan vai ((va trien) OR (va tuyen))*.