Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
tranh cua » manh cua
doanh cua » doanh luan
cong vanh » cong vinh, cong danh, cong van
cong vang » cong lang, cong quang, cong ngang
tuan ban » tuan bang, toan ban, luan ban

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 tinh - hanh ((tranh cua) or (doanh cua)) nhung ((cong vanh) OR (cong vang)) tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - hanh ((tranh cua) OR (doanh cua)) nhung ((cong vanh) OR (cong vang)) tuan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu tinh - hanh ((tranh cua) or (doanh cua)) nhung ((cong vanh) OR (cong vang)) tuan ban".
• Adding a wildcard symbol may retrieve word variants: hoc chieu tinh - hanh ((tranh cua) or (doanh cua)) nhung ((cong vanh) OR (cong vang)) tuan ban*.