Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
tru nang » tra nang, truc nano, thi nang
tri nang » thi nang, tra nang, tri bang
cham duc » pham duc, cham soc, pham duy
dang de » dang deo, dung de, dang do
danh de » hanh de, dan de, danh di
tu sach » thu sach, su sach, te sach
hien tu » khien tu, dien tu
tu cham » toc cham, thi cham
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) OR (tri nang)) x hoi. hien tu cham duc va ((danh de) or (dang de)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tru nang) OR (tri nang)) x hoi. hien tu cham duc va ((danh de) OR (dang de)) su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((tru nang) OR (tri nang)) x hoi. hien tu cham duc va ((danh de) or (dang de)) su triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((tru nang) OR (tri nang)) x hoi. hien tu cham duc va ((danh de) or (dang de)) su triet*.