Perhaps you should try some spelling variations:
hoc thieu » hoc hien
lanh manh » lanh tranh, lan anh, van manh
dung cong » dung trong
cong cong » cong dong, trong cong, dang cong
manh cua » doanh cua, ban cua
tan than » tan thanh, tan tran, ban than
than cao » toan cao, thai cao, than cap

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) or (toc thieu)) xanh - lanh manh cua ((dung cong) or (cong cong)) tan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) xanh - lanh manh cua ((dung cong) OR (cong cong)) tan than cao.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) xanh - lanh manh cua ((dung cong) or (cong cong)) tan than cao*.