Perhaps you should try some spelling variations:
cong ngang » cong quang, cong lang, cong nong
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cua nhung » va nhung
cong nhan » cong nhat, cong thanh, cong san
tinh cua » trinh cua, sinh cua, tinh chat
cong tac » cong ty
tuan cao » toan cao, juan cao, quang cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - hanh tinh cua nhung ((cong tac) or (((cong ngang) OR (cong nhan)))) tuan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh tinh cua nhung ((cong tac) OR (((cong ngang) OR (cong nhan)))) tuan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - hanh tinh cua nhung ((cong tac) or (((cong ngang) OR (cong nhan)))) tuan cao".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh tinh cua nhung ((cong tac) or (((cong ngang) OR (cong nhan)))) tuan cao*.