Perhaps you should try some spelling variations:
thien van » thi van
toc sach » hoc sach, doc sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
hanh tai » thanh tai, hang tai, han tai
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, vuc van
tai cua » thai cua, tai cuc, tri cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) or (dac sac)) ky nang xa hoi. ((hieu va) or (thien van)) cam xuc van hanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (dac sac)) ky nang xa hoi. ((hieu va) OR (thien van)) cam xuc van hanh tai cua te.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (dac sac)) ky nang xa hoi. ((hieu va) or (thien van)) cam xuc van hanh tai cua te*.