Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh thai » nhanh thai, hinh thai, hanh tai
manh hanh » xanh hanh, danh thanh, minh thanh
hieu hien » bieu hien, dieu hien, chieu chien
thai cua » than cua, tai cuc, tri cua
duc manh » suc manh, duc anh, duc minh
dai duc » dao duc, dai dua, mai duc
sach ky » sac ky, sach ty, sach kem
ro hai » o hai, so hai, do hai
co hai » co dai, co hoi, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ky) or (sach y)) nang ((ro hai) OR (co hai)). hieu hien dai duc manh hanh thai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach y)) nang ((ro hai) OR (co hai)). hieu hien dai duc manh hanh thai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sach y)) nang ((ro hai) OR (co hai)). hieu hien dai duc manh hanh thai cua triet*".