Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
thang dong » thang long, thanh dong, thong dong
bang thanh » ban thanh, dang thanh, tang thanh
toc thien » toc thieu, ton thien, duoc thien
tang dong » tang duong, lang dong, nang dong
thanh cau » thanh chau, thanh mau, nhanh cau
cong cap » cung cap, cong cau, cong cac

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 - thanh cong cap ((thang dong) OR (tang dong)) bang thanh cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thien hach - thanh cong cap ((thang dong) OR (tang dong)) bang thanh cau".
• Adding a wildcard symbol may retrieve word variants: toc thien hach - thanh cong cap ((thang dong) OR (tang dong)) bang thanh cau*.