Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
manh trung » manh tung, thanh trung, manh hung
trinh toan » tinh toan, trinh han, trinh quan
thanh toan » thanh hoa, thanh san, tinh toan
hoc thieu » toc thieu
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong

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) or (hoc hien)) xanh - manh trung cua thong cong ((trinh toan) OR (thanh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) xanh - manh trung cua thong cong ((trinh toan) OR (thanh toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (hoc hien)) xanh - manh trung cua thong cong ((trinh toan) OR (thanh toan)) cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc hien)) xanh - manh trung cua thong cong ((trinh toan) OR (thanh toan)) cau*.