Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
trinh toan » tinh toan, thanh toan, trinh han
hoc thien » hoc hien, hoc thieu, hoc thiet
dong cong » duong cong, dung cong, dang cong
toan ban » van ban
cong cu » chung cu
cu dong » cau dong, cua dong, cum dong

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thien hach - thanh cong cu dong cong trinh toan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - thanh cong cu dong cong trinh toan ban*.