Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
toc thien » toc thieu, ton thien, duoc thien
canh manh » lanh manh, canh tranh, cach mang
cua thong » cua thuong, cua khong, cua tong
thong cap » thong cac, trung cap, thong cua
manh cua » doanh cua, ban cua
cap toan » tap toan, lap toan, phap toan
toan cau » 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: toc thien hach - canh manh cua thong thong cap toan cau~.
• Adding a wildcard symbol may retrieve word variants: toc thien hach - canh manh cua thong thong cap toan cau*.