Perhaps you should try some spelling variations:
vien cac » vien bach, vien da, gian cac
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
vien dai » hien dai
tai cua » thai cua, tai cuc, tri cua
xuc van » duc van, luc van, vuc van
te sach » toc sach
ly vang » ly hang, ly van, ly quang
ly nang » ky nang, ly hang, ly quang
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ly nang) OR (ly vang)) x hoi. hieu ((vien cac) OR (vien dai)) xuc van hanh tai cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ly nang) OR (ly vang)) x hoi. hieu ((vien cac) OR (vien dai)) xuc van hanh tai cua tu".
• Adding a wildcard symbol may retrieve word variants: te sach ((ly nang) OR (ly vang)) x hoi. hieu ((vien cac) OR (vien dai)) xuc van hanh tai cua tu*.