Perhaps you should try some spelling variations:
nhanh thang » nhanh thanh, nhanh quang, hanh trang
theo chieu » theo tieu, ho chieu, theo chu
thang cua » thong cua, hang cua, than cua
dung cong » dung trong
trinh can » trinh san, trinh cau, trinh cac
trinh han » trinh quan
cua dung » cua dang, cua dong, qua dung
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: ((theo chieu) or (doi chi)) sach - nhanh thang cua dung cong ((trinh can) OR (trinh han)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (doi chi)) sach - nhanh thang cua dung cong ((trinh can) OR (trinh han)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (doi chi)) sach - nhanh thang cua dung cong ((trinh can) OR (trinh han)) cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doi chi)) sach - nhanh thang cua dung cong ((trinh can) OR (trinh han)) cau*.