Perhaps you should try some spelling variations:
thanh trong » thanh trung, hanh trong, nhanh trong
tranh trong » tran trong, trinh trong, anh trong
tieu xanh » tieu danh, chieu xanh, dieu hanh
dung cong » dung trong
cong tac » cong ty
vang ban » van ban, hang ban, lang ban
nang ban » hang ban, nang quan, nang sang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - ((thanh trong) or (tranh trong)) su dung cong tac ((vang ban) OR (nang ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((thanh trong) OR (tranh trong)) su dung cong tac ((vang ban) OR (nang ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - ((thanh trong) or (tranh trong)) su dung cong tac ((vang ban) OR (nang ban))".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((thanh trong) or (tranh trong)) su dung cong tac ((vang ban) OR (nang ban))*.