Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh, bien tinh
dung cong » dung trong
khang cu » khung cua, thang cua, chung cu
khan cua » than cua, han cua, khien cua
nhan cua » nhat cua, nhan luc, nhan su
cong tac » cong ty
tac thai » toc thai, rac thai, sac thai
thai cao » tai cao, thoai cac, thuat cao
co lieu » cot lieu, co hieu, so lieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: co lieu tinh - hanh ((khang cu) or (((khan cua) OR (nhan cua)))) dung cong tac thai cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co lieu tinh - hanh ((khang cu) OR (((khan cua) OR (nhan cua)))) dung cong tac thai cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co lieu tinh - hanh ((khang cu) or (((khan cua) OR (nhan cua)))) dung cong tac thai cao".
• Adding a wildcard symbol may retrieve word variants: co lieu tinh - hanh ((khang cu) or (((khan cua) OR (nhan cua)))) dung cong tac thai cao*.