Perhaps you should try some spelling variations:
thong cong » trong cong, thong thong, phong chong
trinh phan » trinh han, trinh quan, thanh phan
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
tong cong » trong cong, cong cong, dung cong
phan dau » phan tu, hang dau
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - hanh tinh chat ((thong cong) OR (tong cong)) trinh phan dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - hanh tinh chat ((thong cong) OR (tong cong)) trinh phan dau".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh tinh chat ((thong cong) OR (tong cong)) trinh phan dau*.