Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sang » chieu sang, thieu khang, thieu quang
hanh trung » hanh trang, manh trung, danh trung
hoc thieu » toc thieu, hoc hien
dap dung » dan dung, dap ung, cap dung
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap
ap dung » xay dung, van dung

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 - ((hanh trung) or (thanh trung)) ((dap dung) or (ap dung)) cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((hanh trung) OR (thanh trung)) ((dap dung) OR (ap dung)) cong tan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - ((hanh trung) or (thanh trung)) ((dap dung) or (ap dung)) cong tan toan cau*.