Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
hoc thieu » toc thieu, hoc hien
huong cua » dung cua
dung cong » dung trong
hang cua » mang cua, hang ca, thong cua
cong tan » cong tac, cong san, cong thanh
toan cao » toan tap
toan ban » van 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 thieu quang - hanh ((hang cua) or (huong cua)) dung cong tan ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu quang - hanh ((hang cua) OR (huong cua)) dung cong tan ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu quang - hanh ((hang cua) or (huong cua)) dung cong tan ((toan cao) or (toan ban))*.