Perhaps you should try some spelling variations:
nham thuc » nam thuc, nham thu, pham thuc
nhan thuc » nhan luc, dan thuc, toan thuc
chau viet » chu viet, khau viet, cham viet
sach thu » sach thue, sach thieu, sach tham
thu nang » thi nang, thu hang, thu bang
hieu van » hieu va, thien van, lieu va
hanh lam » thanh lap, hanh kem, hanh va
lam chau » lai chau, lam chu, lam chat
vu sach » vu bach, su sach, vu khach
va hanh » van hanh, va thanh, va danh
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: vu sach thu nang x hoi. hieu van ((nham thuc) OR (nhan thuc)) va hanh lam chau viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach thu nang x hoi. hieu van ((nham thuc) OR (nhan thuc)) va hanh lam chau viet".
• Adding a wildcard symbol may retrieve word variants: vu sach thu nang x hoi. hieu van ((nham thuc) OR (nhan thuc)) va hanh lam chau viet*.