Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tinh va » tich va, trinh van, trinh vat
tinh da » tinh gia, tinh lao, tinh nam
qua cam » qua cham, qua cac, qua ca
su sach » so sach, vu sach
nang ma » tang ma, sang ma, mang may
cam tuc » cam xuc, cam tu, nam thuc
tuc va » thuc va, truc va, 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: su sach y ((nang ma) or (nang cao)) hoi. hieu qua cam tuc va ((tinh da) OR (tinh va)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((nang ma) OR (nang cao)) hoi. hieu qua cam tuc va ((tinh da) OR (tinh va)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y ((nang ma) or (nang cao)) hoi. hieu qua cam tuc va ((tinh da) OR (tinh va)) cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach y ((nang ma) or (nang cao)) hoi. hieu qua cam tuc va ((tinh da) OR (tinh va)) cua triet*.