Perhaps you should try some spelling variations:
sach tru » sach truc, sach thu, sach tu
tru nang » tra nang, tri nang, truc nano
cham duc » pham duc, cham soc, pham duy
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
hien tu » khien tu, dien tu
tu cham » toc cham, thi cham
danh de » hanh de, dan de, dang de
dung de » dung he, dung dat
x hoi » xa hoi, o hoi, x ho

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