Perhaps you should try some spelling variations:
thieu hach » thien hach, chieu sach, hieu cach
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
doanh cua » doanh luan
manh cua » ban cua
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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 hach - canh ((tranh cua) or (((manh cua) OR (doanh cua)))) nhung cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu hach - canh ((tranh cua) OR (((manh cua) OR (doanh cua)))) nhung cong dan chan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu hach - canh ((tranh cua) or (((manh cua) OR (doanh cua)))) nhung cong dan chan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu hach - canh ((tranh cua) or (((manh cua) OR (doanh cua)))) nhung cong dan chan cau*.