Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hoc chuyen » khong chuyen
kien thuoc » kien thuc, bien thuoc, trien thuoc
thuoc sach » hoc sach, nuoc sach, thuoc sinh
sach khoa » bach khoa, sach nha, anh khoa
khoa kham » kho khan, khoa than
kham cong » pham cong, khau cong, khach cong
cong doan » cong dan, cong hoan, dong doanh
doan minh » doan hinh, doan tinh, hoang minh
tin hoc » sinh hoc

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 (thuat sach)) tin hoc chuyen đe ky thuat: kien thuoc sach khoa kham cong doan minh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu hoach) OR (thuat sach)) tin hoc chuyen đe ky thuat: kien thuoc sach khoa kham cong doan minh.
• Adding a wildcard symbol may retrieve word variants: ((thu hoach) or (thuat sach)) tin hoc chuyen đe ky thuat: kien thuoc sach khoa kham cong doan minh*.