Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
thieu tinh » trieu tinh, chieu tinh, thien tinh
luong va » dung va
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban
dong va » dung va, dong ha, dong hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu tinh - anh ((dong va) OR (luong va)) thong cong tan toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu tinh - anh ((dong va) OR (luong va)) thong cong tan toan ban".
• Adding a wildcard symbol may retrieve word variants: toc thieu tinh - anh ((dong va) OR (luong va)) thong cong tan toan ban*.