Perhaps you should try some spelling variations:
van tham » van thanh, van tuan, van chat
dieu cua » dieu tra
dien cuc » dien tu, vien cac, dien hoc
va danh » va dinh, va dan, va hanh
te sach » toc sach
va tham » va cham, va thanh, va thuat
nang xa » nang x, lang xa, nang ma
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang

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 v nang xa hoi. hieu ((va tham) or (van tham)) hoc va danh ((dien cuc) OR (dieu cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang xa hoi. hieu ((va tham) OR (van tham)) hoc va danh ((dien cuc) OR (dieu cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v nang xa hoi. hieu ((va tham) or (van tham)) hoc va danh ((dien cuc) OR (dieu cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach v nang xa hoi. hieu ((va tham) or (van tham)) hoc va danh ((dien cuc) OR (dieu cua)) tre*.