Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
ho chieu » theo chieu, doi chieu, mot chieu
khang cu » khung cua, thang cua, chung cu
khan cua » nhan cua, than cua, han cua
cong tac » cong ty
tac khan » tac nhan, cac khoan, tac chuan
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc thieu)) tinh - hanh ((khang cu) or (khan cua)) dung cong tac khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) tinh - hanh ((khang cu) OR (khan cua)) dung cong tac khan cap.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) tinh - hanh ((khang cu) or (khan cua)) dung cong tac khan cap*.