Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
thanh hung » thanh huong, thanh tung, thanh trung
thong cong » trong cong, tong cong, thong thong
hieu cach » hieu cac, chieu sach, hieu ca
cua thong » cua thuong, cua khong, cua tong
manh toan » thanh toan, anh tuan, tinh toan
hung cua » huong cua, chung cua, khung cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu cach) or (thien hach)) - thanh hung cua thong cong ((manh toan) or (van ban)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu cach) OR (thien hach)) - thanh hung cua thong cong ((manh toan) OR (van ban)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu cach) or (thien hach)) - thanh hung cua thong cong ((manh toan) or (van ban)) cau*.