Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, hang cong
hoc thien » hoc hien, hoc thieu, hoc thiet
thang cua » thong cua, hang cua, than cua
cong vang » cong lang, cong quang, cong ngang
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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 - hanh ((thang cua) or (trung tuan)) nhung cong vang ((toan cau) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - hanh ((thang cua) OR (trung tuan)) nhung cong vang ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien hach - hanh ((thang cua) or (trung tuan)) nhung cong vang ((toan cau) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - hanh ((thang cua) or (trung tuan)) nhung cong vang ((toan cau) OR (toan cao))*.