Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hieu thien » hieu hien, chieu chien, dieu khien
hach duoc » hanh duoc, sach duoc, hoc duoc
cua triet » cua viet, su triet, va triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang co » nang cao, nang doc, nang noi
duoc va » nuoc va, duc va, duoc ma
va danh » va dinh, va dan, va hanh
danh du » danh dau, danh tu, dinh du
nang o » nang ho, nang ro, nang x
du cua » duy cua, dau cua, dum cua

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 ky ((nang o) OR (nang co)) hoi. hieu thien hach duoc va danh du cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((nang o) OR (nang co)) hoi. hieu thien hach duoc va danh du cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang o) OR (nang co)) hoi. hieu thien hach duoc va danh du cua triet*.