Perhaps you should try some spelling variations:
thanh trung » thanh tung
thua hien » thua thien, thuat hien, thuc hien
hien hanh » dieu hanh
trung cua » truong cua, trung tuan, trung cap
thuat dam » thuat cam, thuat do, thuat xay
cua dung » cua dang, cua dong, qua dung
trong ki » truong ki, trong ky, trong kinh
ki thuat » ky thuat

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

• Performing a fuzzy search may retrieve terms with similar spellings: thua hien hanh - thanh trung cua dung trong ki thuat dam~.
• Adding a wildcard symbol may retrieve word variants: thua hien hanh - thanh trung cua dung trong ki thuat dam*.