Perhaps you should try some spelling variations:
thanh thong » thanh thuong, thanh hong, thanh thang
thieu sang » chieu sang, thieu khang, thieu quang
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
thong cap » thong cac, trung cap, thong cua
cap nhung » cam nhung, vap nhung, dap nhung
cong san » cong tac
tban cau » toan cau, toan cao, ban can
ban cau » bang cau, ban can, van cau

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 sang - thanh thong cap nhung cong san ((tban cau) or (ban cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh thong cap nhung cong san ((tban cau) OR (ban cau)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh thong cap nhung cong san ((tban cau) or (ban cau))*.