Perhaps you should try some spelling variations:
hien tinh » khien tinh, thien tinh, bien tinh
dung cong » dung trong
khang cu » khung cua, thang cua, chung cu
khan cua » nhan cua, han cua, khien cua
than cua » nhan cua, thai cua, ban 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: hoc hien tinh - hanh ((khang cu) or (((khan cua) or (than cua)))) dung cong tac khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tinh - hanh ((khang cu) OR (((khan cua) OR (than cua)))) dung cong tac khan cap.
• Adding a wildcard symbol may retrieve word variants: hoc hien tinh - hanh ((khang cu) or (((khan cua) or (than cua)))) dung cong tac khan cap*.