Perhaps you should try some spelling variations:
tan thanh » tran thanh, tang thanh, toan thanh
cua triet » cua viet, su triet, va triet
thanh va » thanh van, hanh va, thanh ha
dao bang » cao bang, tao bang, dau bang
bang cau » hang cau, bang cac, nang cao
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cuu tre, dua tren
su sach » vu sach
hieu ve » hieu va, hieu van
so sach » so sanh, bo sach, co sach
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) OR (so sach)) dao bang cau hoi. hieu ve cam duc tan thanh va ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) dao bang cau hoi. hieu ve cam duc tan thanh va ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) dao bang cau hoi. hieu ve cam duc tan thanh va ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) dao bang cau hoi. hieu ve cam duc tan thanh va ((cua tre) or (cua triet))*.