Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
ton hanh » toan hanh, hon hanh, lon hanh
duc ton » duc tan
thu sac » thu sach, thu san, thu xac
lang xa » lang ha, dang xay, lang van
ve cham » va cham, ve chat, vu cham
sac ky » cac ky, sai ky
ve cac » va cac, vien cac
vi su » va su, ve su, ki su

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sac ky ((lang xa) or (nang x)) hoi. hieu ((ve cham) or (ve cac)) duc ton hanh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky ((lang xa) OR (nang x)) hoi. hieu ((ve cham) OR (ve cac)) duc ton hanh vi su triet.
• Adding a wildcard symbol may retrieve word variants: thu sac ky ((lang xa) or (nang x)) hoi. hieu ((ve cham) or (ve cac)) duc ton hanh vi su triet*.