Perhaps you should try some spelling variations:
sach tru » sach truc, sach thu, sach tu
tru nang » tra nang, tri nang, truc nano
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
va cham » va chat
va tham » van tham, va thanh, va thuat
va hanh » van hanh, va thanh, va danh
hanh ve » hanh vi, hanh va, hanh kem
x hoi » xa hoi, o hoi, x ho
ve su » va su

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 tru nang x hoi. hieu ((va cham) or (va tham)) duc va hanh ve su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tru nang x hoi. hieu ((va cham) OR (va tham)) duc va hanh ve su triet.
• Adding a wildcard symbol may retrieve word variants: tu sach tru nang x hoi. hieu ((va cham) or (va tham)) duc va hanh ve su triet*.