Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
van hanh » van thanh, ban hanh, van anh
nam thuc » nam thuoc, am thuc, nam thu
sach ky » sac ky, sach y, sach kem
cam tuc » cam xuc, cam tu, dam thuc
hieu ve » hieu va, hieu van
dang ha » dong ha, dung ha, lang ha
sach ty » sach y, sach tu, sach thu
ha hoi » hoa hoi, ha noi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) or (sach ty)) dang ha hoi. hieu ve ((cam tuc) or (nam thuc)) van hanh thai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach ty)) dang ha hoi. hieu ve ((cam tuc) OR (nam thuc)) van hanh thai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sach ty)) dang ha hoi. hieu ve ((cam tuc) or (nam thuc)) van hanh thai cua triet*.