Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
voi hot » voi hoat, voi hoa, voi hoc
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac

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 y nang mai hoi. hieu ve cac xuc van hanh ((voi ho) or (voi hot)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang mai hoi. hieu ve cac xuc van hanh ((voi ho) OR (voi hot)) viet.
• Adding a wildcard symbol may retrieve word variants: su sach y nang mai hoi. hieu ve cac xuc van hanh ((voi ho) or (voi hot)) viet*.