Perhaps you should try some spelling variations:
nuoc tren » thuoc tren
cuoc tre » cuoc tro, duoc tren, quoc te
danh lai » danh sai, gianh lai, dinh lam
hieu van » hieu va, thien van, lieu va
cam duc » cam xuc, cao duc, pham duc
va danh » va dinh, va dan, va hanh
te sach » toc sach
ty sang » ty hang, duy sang, thu sang
van cam » van nam, van lam, van cau

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 ((ty sang) or (ty xang)) xa hoi. hieu van cam duc va danh lai ((cuoc tre) OR (nuoc tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty sang) OR (ty xang)) xa hoi. hieu van cam duc va danh lai ((cuoc tre) OR (nuoc tren))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty sang) or (ty xang)) xa hoi. hieu van cam duc va danh lai ((cuoc tre) OR (nuoc tren))*".