Perhaps you should try some spelling variations:
manh trung » manh tung, thanh trung, manh hung
hoc thieu » toc thieu, hoc hien
trung dap » trung cap, trung dai, trung dam
dung cong » dung trong
doc hieu » toc thieu, hoc hien
dap dung » ap dung, dan dung, dap ung
cong tan » cong tac, cong san, cong thanh
tran cao » toan cao, tran chau, trang cho

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 (doc hieu)) tinh - manh trung dap dung cong tan tran cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doc hieu)) tinh - manh trung dap dung cong tan tran cao*.