Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hien xanh » hien hanh, hien nhanh, chieu xanh
trinh van » trinh han, trinh quan, trinh toan
trinh va » trinh vat, trinh ve, trinh vi
cong san » cong tac
phan cau » phan dau, phan tu, phan lap
phan cac » nhan cach, phan dau, phan lap

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 - canh ((trinh va) or (trinh van)) thong cong san ((phan cau) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - canh ((trinh va) OR (trinh van)) thong cong san ((phan cau) OR (phan cac)).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh ((trinh va) or (trinh van)) thong cong san ((phan cau) or (phan cac))*.