Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thanh tung » thanh cong
hien danh » thien danh, hien hanh, hien nhanh
hang cong » dang cong, hang nong, bang cong
cong tinh » cong trinh, cong vinh, long tinh
toan tap » toan ban
tung va » trung va, tuong va, dung va
va hang » van hang, va nang, va lang

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 danh) or (thien thanh)) - thanh tung va hang cong tinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien danh) OR (thien thanh)) - thanh tung va hang cong tinh toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien danh) or (thien thanh)) - thanh tung va hang cong tinh toan tap*.