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