Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
kho tang » cao tang
su sach » so sach, vu sach
xuc van » duc van, luc van, vuc van
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ky tang » ky nang, ky dang, ky trong
ky sang » ky nang, ky dang, duy sang
cu tren » tu tren, dua tren
ve cam » ve cham, ve cac, va cam
vai cu » vai cua, van cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ky sang) or (((ky tang) or (kho tang)))) mai hoi. hieu ve cam xuc van hanh vai cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky sang) OR (((ky tang) OR (kho tang)))) mai hoi. hieu ve cam xuc van hanh vai cu tren.
• Adding a wildcard symbol may retrieve word variants: su sach ((ky sang) or (((ky tang) or (kho tang)))) mai hoi. hieu ve cam xuc van hanh vai cu tren*.