Perhaps you should try some spelling variations:
thien van » thi van
dau tren » dau tien, dat tren, dau tieng
cau tren » cu tren, ca tren, cau treo
sach lo » sach dao, sach doi, sach hoi
cua tre » cua te, cuu tre, cua triet
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
cau tuc » cau truc, cau tu, cau luc
van cau » van dau, van hau, van chat
nang xa » nang x, lang xa, nang ma
lo nang » ho nang, ly nang, loai nang
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach lo nang xa hoi. thien van cau tuc va hanh vi ((cua tre) or (((cau tren) OR (dau tren))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach lo nang xa hoi. thien van cau tuc va hanh vi ((cua tre) OR (((cau tren) OR (dau tren)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach lo nang xa hoi. thien van cau tuc va hanh vi ((cua tre) or (((cau tren) OR (dau tren))))".
• Adding a wildcard symbol may retrieve word variants: su sach lo nang xa hoi. thien van cau tuc va hanh vi ((cua tre) or (((cau tren) OR (dau tren))))*.