Perhaps you should try some spelling variations:
thanh tung » thanh cong
phuong cau » huong cau, phuong cham, phuong cach
hoc thieu » toc thieu, hoc hien
ho chieu » theo chieu, doi chieu, mot chieu
tung cua » trung cua, tuong cua, dung cua
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty
cong va » dong va, cong ha, luong va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc thieu)) xanh - thanh tung cua dung ((cong va) OR (cong tac)) phuong cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - thanh tung cua dung ((cong va) OR (cong tac)) phuong cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) xanh - thanh tung cua dung ((cong va) OR (cong tac)) phuong cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) xanh - thanh tung cua dung ((cong va) OR (cong tac)) phuong cau*.