Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
nhanh lang » nhanh quang, nhanh thang, nhan dang
hoc thieu » toc thieu, hoc hien
nhan lang » nhan dang, nhon lang, nhung lang
chua dang » cua dang, chua dong, chua nang
dang cong » dung cong
cong van » cong vang, cong san, song van
ban ban » ban banh, can ban, ban dan

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 tinh - ((nhanh lang) or (nhan lang)) chua dang cong van ban ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - ((nhanh lang) OR (nhan lang)) chua dang cong van ban ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - ((nhanh lang) or (nhan lang)) chua dang cong van ban ban*.