Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
cham buc » cham soc, pham duc, cham cuu
dang hai » dang khai, hang hai, dung hai
xa dang » xa dong, da dang, xo dang
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
hang ma » hang ca, tang ma, nang ma
va cham » va chat, va tham
buc xa » tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty ((hang ma) or (hang va)) hoi. hieu va cham buc xa dang hai ((cua triet) OR (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty ((hang ma) OR (hang va)) hoi. hieu va cham buc xa dang hai ((cua triet) OR (cua viet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty ((hang ma) or (hang va)) hoi. hieu va cham buc xa dang hai ((cua triet) OR (cua viet))*".