Perhaps you should try some spelling variations:
thien van » thi van
toc sach » hoc sach, doc sach, thuoc sach
danh vai » danh sai, danh va, doanh van
ky lang » ky dang, ky tang, tay lang
van cam » van nam, van lam, van cau
va danh » va dinh, va dan, va hanh
xuc va » duc va, tuc va, luc va
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 ((ky lang) OR (ky nang)) xa hoi. thien van cam xuc va danh vai ((va thiet) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((ky lang) OR (ky nang)) xa hoi. thien van cam xuc va danh vai ((va thiet) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((ky lang) OR (ky nang)) xa hoi. thien van cam xuc va danh vai ((va thiet) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: toc sach ((ky lang) OR (ky nang)) xa hoi. thien van cam xuc va danh vai ((va thiet) or (cua te))*.