Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
va cham » va chat, va tham
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
hanh du » hanh dua, hanh tu, hanh de
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam
du su » dau su, da su, de su

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

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