Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
mot chieu » doi chieu, ho chieu
dung cong » dung trong
than cua » nhan cua, thai cua, ban cua
cong tac » cong ty
tac nhan » tao nhan, cac nhan, dac nhan
nhan cao » nha cao, nhan tao, nhan co

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (theo chieu)) tinh - hanh ((chung cu) or (than cua)) dung cong tac nhan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (theo chieu)) tinh - hanh ((chung cu) OR (than cua)) dung cong tac nhan cao.
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (theo chieu)) tinh - hanh ((chung cu) or (than cua)) dung cong tac nhan cao*.