Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cac truc » cau truc, cac trung, sach truc
tinh va » tich va, trinh van, trinh vat
va tinh » may tinh
cac tru » ca tru, cac tro, cac thu
sach ky » sac ky, sach y, sach ty
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky lang xa hoi. hieu ve ((cac truc) OR (cac tru)) va tinh va ((cua tu) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky lang xa hoi. hieu ve ((cac truc) OR (cac tru)) va tinh va ((cua tu) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky lang xa hoi. hieu ve ((cac truc) OR (cac tru)) va tinh va ((cua tu) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: vu sach ky lang xa hoi. hieu ve ((cac truc) OR (cac tru)) va tinh va ((cua tu) or (cua triet))*.