Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, cuoc cach, cuon sach
pham thuc » phap thuc, pham chuc, nham thuc
danh kien » dinh kien, danh viet, linh kien
doc sach » toc sach, dac sac, bo sach
hoc sach » hoc sinh, hoc cac, hoc anh
vat danh » va danh, van danh, luat danh
kien cua » khien cua, dien cua, tien cua
hieu va » lieu va, hieu qua
va pham » van pham, va phat, va phap
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((doc sach) or (hoc sach))) or (nuoc sach)) ky nang x hoi. hieu va pham thuc vat danh kien cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((doc sach) OR (hoc sach))) OR (nuoc sach)) ky nang x hoi. hieu va pham thuc vat danh kien cua te.
• Adding a wildcard symbol may retrieve word variants: ((((doc sach) or (hoc sach))) or (nuoc sach)) ky nang x hoi. hieu va pham thuc vat danh kien cua te*.