Perhaps you should try some spelling variations:
hoc thieu » toc thieu
tranh cua » doanh cua, manh cua
tong cong » trong cong, cong cong, dung cong
trinh can » trinh han, trinh san, trinh cau
ho chieu » theo chieu, doi chieu, mot chieu
cua tong » cua cong, cua dong, cua nong
can ban » van ban, toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (((hoc thieu) or (hoc hien)))) xanh - canh tranh cua tong cong trinh can ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (((hoc thieu) OR (hoc hien)))) xanh - canh tranh cua tong cong trinh can ban.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (((hoc thieu) or (hoc hien)))) xanh - canh tranh cua tong cong trinh can ban*.