Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
nhung cong » dung cong, thong cong, hang cong
hien sach » dien sach, kien sach, chieu sach
cong anh » cong danh, dong anh, hong anh
anh luan » anh tuan, anh quan, anh xuan
luan ban » luan van, luan san, luan han
tung va » trung va, tuong va, vung va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien sach) or (thien hach)) - thanh ((tung va) or (dung va)) nhung cong anh luan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien sach) OR (thien hach)) - thanh ((tung va) OR (dung va)) nhung cong anh luan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien sach) or (thien hach)) - thanh ((tung va) or (dung va)) nhung cong anh luan ban*.