Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
trung tuan » trung thanh, trung tam, tran tuan
truong cao » truong dai
thong cong » trong cong, thong thong, phong chong
hoc thieu » toc thieu, hoc hien
tong cong » trong cong, cong cong, dung cong
tan khan » tan khang, tan nhan, toan khoan
khan ap » khan cap, han ap, khan dam

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sach - thanh ((trung tuan) or (truong cao)) ((thong cong) OR (tong cong)) tan khan ap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - thanh ((trung tuan) OR (truong cao)) ((thong cong) OR (tong cong)) tan khan ap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - thanh ((trung tuan) or (truong cao)) ((thong cong) OR (tong cong)) tan khan ap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh ((trung tuan) or (truong cao)) ((thong cong) OR (tong cong)) tan khan ap*.