Perhaps you should try some spelling variations:
thanh trung » thanh tung
lang thong » lang trong, lang thang, mang thong
hoc thieu » toc thieu, hoc hien
doi chieu » doc hieu, ho chieu, mot chieu
trung dap » trung cap, trung dai, trung dam
dap trong » dat trong, dao trong, dai trong
cong lang » cong vang, cong luong, cong quang
thong tu » phong tuc, thong tin, thong ke
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((doi chieu) OR (doi chi))) or (hoc thieu)) sach - thanh trung dap trong cong lang thong tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((doi chieu) OR (doi chi))) OR (hoc thieu)) sach - thanh trung dap trong cong lang thong tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((doi chieu) OR (doi chi))) or (hoc thieu)) sach - thanh trung dap trong cong lang thong tu".
• Adding a wildcard symbol may retrieve word variants: ((((doi chieu) OR (doi chi))) or (hoc thieu)) sach - thanh trung dap trong cong lang thong tu*.