Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
thuat sach » thuat lanh, thuat san
kien thuoc » kien thuc, bien thuoc, trien thuoc
thuoc sach » hoc sach, nuoc sach, thuoc sinh
khan cong » phan cong, khau cong, thanh cong
cong doan » cong dan, cong hoan, dong doanh
doan minh » doan hinh, doan tinh, hoang minh
thu sach » tu sach, thu hoach, khau sach
sach kho » bach khoa, sach dao, sach nha
kho khan » khoa kham, khoa than
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 sach) or (thuat sach)) tin hoc chuyen đe ky thuat: kien thuoc sach kho khan cong doan minh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) tin hoc chuyen đe ky thuat: kien thuoc sach kho khan cong doan minh.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuat sach)) tin hoc chuyen đe ky thuat: kien thuoc sach kho khan cong doan minh*.