Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc chieu » hoc thieu, ho chieu, hoc hien
thong van » trong van, thong va, thong quan
phong va » thong va, phung van, thuong va
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 nhung) or (va nhung)) ((phong va) OR (thong van)) tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu tinh - hanh tranh ((cua nhung) OR (va nhung)) ((phong va) OR (thong van)) tuan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu tinh - hanh tranh ((cua nhung) or (va nhung)) ((phong va) OR (thong van)) tuan ban".
• Adding a wildcard symbol may retrieve word variants: hoc chieu tinh - hanh tranh ((cua nhung) or (va nhung)) ((phong va) OR (thong van)) tuan ban*.