Perhaps you should try some spelling variations:
than tuan » thanh tuan, tran tuan, thanh xuan
duc than » duc thang, duc thanh, duc thuan
te sach » toc sach
sach lo » sach dao, sach doi, sach hoi
lo nang » ho nang, ly nang, loai nang
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
vai cua » dai cua, hai cua, bai cua
lai cua » dai cua, hai cua, lai chau

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 lo nang ((xa hoi) or (ma hoa)). hieu ve pham duc than tuan ((vai cua) or (lai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach lo nang ((xa hoi) OR (ma hoa)). hieu ve pham duc than tuan ((vai cua) OR (lai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: te sach lo nang ((xa hoi) or (ma hoa)). hieu ve pham duc than tuan ((vai cua) or (lai cua)) tre*.