Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hoc chieu » hoc thieu, ho chieu, hoc dieu
trinh cua » trinh luat, trinh quan, trinh luan
tinh cua » sinh cua, tinh chat, tranh cua
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than lap » thanh lap, phan lap, toan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) OR (hoc hien)) sach - hanh ((trinh cua) or (tinh cua)) thong cong ban than lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc hien)) sach - hanh ((trinh cua) OR (tinh cua)) thong cong ban than lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) OR (hoc hien)) sach - hanh ((trinh cua) or (tinh cua)) thong cong ban than lap".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) OR (hoc hien)) sach - hanh ((trinh cua) or (tinh cua)) thong cong ban than lap*.