Perhaps you should try some spelling variations:
phung cong » nhung cong, phong cong, nhung chong
hieu sach » chieu sach, hieu cach, dien sach
tuan chau » chuan chau, thanh chau, tuan thu
tran chau » tranh chap, tran huu
doc hieu » toc thieu, hoc thieu, hoc hien
trang va » tran van
cong van » cong vang, cong san, song van

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu sach - hanh ((trang va) OR (hang va)) phung cong van ((tuan chau) or (tran chau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - hanh ((trang va) OR (hang va)) phung cong van ((tuan chau) OR (tran chau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu sach - hanh ((trang va) OR (hang va)) phung cong van ((tuan chau) or (tran chau))".
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - hanh ((trang va) OR (hang va)) phung cong van ((tuan chau) or (tran chau))*.