Perhaps you should try some spelling variations:
thanh dan » thanh san, thanh van, thanh dat
ty chang » ty hang, ty chung, thi chang
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
thuc gia » thuc giai, thue gia, thuc dia
tu sach » thu sach, su sach, te sach
chang x » chang xu, chang xue, change _
dan cua » dan ca, ban cua, dai cua
cua te » cua tu

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 (thu hoach)) ty chang x ho. hieu van nam thuc gia thanh dan cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu hoach)) ty chang x ho. hieu van nam thuc gia thanh dan cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu hoach)) ty chang x ho. hieu van nam thuc gia thanh dan cua te*.