Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach nham » sach nha, sach tham, sach han
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
cua tre » cua te, cuu tre, dua tren
cam duc » cam xuc, cao duc, pham duc
su sach » so sach, vu sach
sang ma » tang ma, nang ma, sang tao
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam

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 nham ((sang ma) or (nang cao)) hoi. hieu ve cam duc va thanh vi ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach nham ((sang ma) OR (nang cao)) hoi. hieu ve cam duc va thanh vi ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach nham ((sang ma) or (nang cao)) hoi. hieu ve cam duc va thanh vi ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: su sach nham ((sang ma) or (nang cao)) hoi. hieu ve cam duc va thanh vi ((cua tre) OR (cua triet))*.