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

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 ((dang xay) or (nang x)) hoi. hieu ((va cam) or (ve cac)) duc ton hanh va su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky ((dang xay) OR (nang x)) hoi. hieu ((va cam) OR (ve cac)) duc ton hanh va su triet.
• Adding a wildcard symbol may retrieve word variants: thu sac ky ((dang xay) or (nang x)) hoi. hieu ((va cam) or (ve cac)) duc ton hanh va su triet*.