Perhaps you should try some spelling variations:
thieu hach » thien hach, chieu sach, hieu cach
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua
manh cua » doanh cua, ban cua
dan can » dan chan, dan canh, dan ca
can cau » van cau, ban cau, ca 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)) ((nhung cong) OR (thong cong)) dan can cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu hach - canh ((tranh cua) OR (manh cua)) ((nhung cong) OR (thong cong)) dan can cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu hach - canh ((tranh cua) or (manh cua)) ((nhung cong) OR (thong cong)) dan can cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu hach - canh ((tranh cua) or (manh cua)) ((nhung cong) OR (thong cong)) dan can cau*.