Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
dinh dinh » binh dinh, hinh dinh, dinh kinh
thi hanh » thi thanh
van nhan » van phan, van thanh, danh nhan
nhan luc » nang luc
dinh cuu » dinh chi
hanh va » hang va, hanh vi
thi van » thi lan, thi nang
va dinh » van dinh, va kinh, va tinh
cuu tre » cua tre, cau tren, cau treo
va hoi » xa hoi, va hoc, va hoa
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu hoach) or (thuoc sach)) thi hanh va hoi. thi van nhan luc va dinh dinh cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu hoach) OR (thuoc sach)) thi hanh va hoi. thi van nhan luc va dinh dinh cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((thu hoach) or (thuoc sach)) thi hanh va hoi. thi van nhan luc va dinh dinh cuu tre*.