Perhaps you should try some spelling variations:
trien nong » trien cong
thue nang » thien nang, thuat nang, thi nang
toc sach » hoc sach, doc sach, thuoc sach
lieu van » lieu va, hieu van, sieu van
van chat » cao chat
chat duc » chat xuc, chat doc, chet duoc
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
di cua » dai cua, doi cua, de 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 ((thue nang) or (trien nong)) xa hoi. lieu van chat duc va hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((thue nang) OR (trien nong)) xa hoi. lieu van chat duc va hanh di cua te.
• Adding a wildcard symbol may retrieve word variants: toc sach ((thue nang) or (trien nong)) xa hoi. lieu van chat duc va hanh di cua te*.