Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
thanh tung » thanh cong
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
dan than » dan chan, ban than, van than
tung am » tung pham, tung dan, tung bay
am dung » am duong, lam dung, ap dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (doi chieu)) xanh - thanh tung am dung cong ((xuan toan) or (dan than)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (doi chieu)) xanh - thanh tung am dung cong ((xuan toan) OR (dan than)) cao.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doi chieu)) xanh - thanh tung am dung cong ((xuan toan) or (dan than)) cao*.