Perhaps you should try some spelling variations:
hoc thieu » hoc hien
cong dang » cong dong, cong dung, cong danh
anh nang » ganh nang, anh bang, anh dang
nang cua » mang cua, hang cua, nang dua
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
van chat » cao chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) OR (toc thieu)) xanh - anh nang cua dung ((cong dang) or (cong dan)) van chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) xanh - anh nang cua dung ((cong dang) OR (cong dan)) van chat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) OR (toc thieu)) xanh - anh nang cua dung ((cong dang) or (cong dan)) van chat".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) OR (toc thieu)) xanh - anh nang cua dung ((cong dang) or (cong dan)) van chat*.