Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, dieu hanh
phan dang » phan dau, phan cong, nhan dan
cong anh » cong danh, dong anh, hong anh
tuan ban » tuan bang, toan ban, quang ban
luan ban » luan van, luan san, luan han
dang he » dung he, dang ha, bang he

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu manh) or (chieu sach)) - phan dang he thong cong anh ((tuan ban) OR (luan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (chieu sach)) - phan dang he thong cong anh ((tuan ban) OR (luan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu manh) or (chieu sach)) - phan dang he thong cong anh ((tuan ban) OR (luan ban))".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (chieu sach)) - phan dang he thong cong anh ((tuan ban) OR (luan ban))*.