Perhaps you should try some spelling variations:
ve triet » va trien
hang mai » hoang mai, hang tai, hang hai
mai khoi » mai khoa, tai khoa, cac khoi
su triet » su viet, su tien
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
xuc van » duc van, luc van, vuc van
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
ty hang » ly hang, ty xang, thi hang
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ty hang mai khoi. hieu ((ve cam) or (ve cac)) xuc van hanh vai ((su triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty hang mai khoi. hieu ((ve cam) OR (ve cac)) xuc van hanh vai ((su triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: vu sach ty hang mai khoi. hieu ((ve cam) or (ve cac)) xuc van hanh vai ((su triet) or (ve triet))*.