Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
khanh tra » thanh tra, khanh trach, khanh hoa
va thanh » gia thanh, ban thanh, va tinh
sach duy » sach dung, sach duoc, sach dao
te sach » toc sach
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
tra hoi » tra loi, tra hai, tri hoi
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai

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 duy khanh tra hoi. hieu ((ve cam) or (ve cac)) duc va thanh tai ((cuu tre) OR (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach duy khanh tra hoi. hieu ((ve cam) OR (ve cac)) duc va thanh tai ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach duy khanh tra hoi. hieu ((ve cam) or (ve cac)) duc va thanh tai ((cuu tre) OR (cua tre))".
• Adding a wildcard symbol may retrieve word variants: te sach duy khanh tra hoi. hieu ((ve cam) or (ve cac)) duc va thanh tai ((cuu tre) OR (cua tre))*.