Perhaps you should try some spelling variations:
thien nang » thien bang, thien dang, trien nang
cau tren » cu tren, dau tren, ca tren
thanh va » thanh van, hanh va, thanh ha
va thanh » gia thanh, ban thanh, va tinh
hieu van » hieu va, thien van, lieu va
cau xuc » cam xuc, cau luc, cau truc
cua tre » cua te, cuu tre, cua triet
tu sach » thu sach, su sach, tu cach
nang xa » nang x, lang xa, nang ma
te sach » toc sach
van cau » van dau, van hau, van chat
xuc va » duc va, tuc va, luc va

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

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