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
nhan cua » nhat cua, nhan luc, nhan su
than cua » thai cua, ban cua, gian cua
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cao » toan cao, thai cao, than cap

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 (((nhan cua) or (than cua)))) dung cong tac than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tinh - hanh ((khang cu) OR (((nhan cua) OR (than cua)))) dung cong tac than cao.
• Adding a wildcard symbol may retrieve word variants: hoc hien tinh - hanh ((khang cu) or (((nhan cua) or (than cua)))) dung cong tac than cao*.