Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cua triet » cua viet, su triet, va triet
thanh va » thanh van, thanh ha, thanh ve
nang xa » lang xa, nang ma, mang xa
qua cam » qua cham, qua cac, qua ca
sach ty » sach y, sach tu, sach thu
luc ban » duc ban, cuc ban, luc bat
hanh va » hang va, hanh vi
cam luc » cam xuc, cau luc

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ty ((nang xa) OR (nang x)) hoi. hieu qua cam luc ban ((thanh va) or (hanh va)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ty ((nang xa) OR (nang x)) hoi. hieu qua cam luc ban ((thanh va) OR (hanh va)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ty ((nang xa) OR (nang x)) hoi. hieu qua cam luc ban ((thanh va) or (hanh va)) cua triet".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ty ((nang xa) OR (nang x)) hoi. hieu qua cam luc ban ((thanh va) or (hanh va)) cua triet*.