Perhaps you should try some spelling variations:
trinh nhan » trinh han, trinh phan, trinh nha
cong thang » cong thanh, cang thang, cong thong
hoc chieu » hoc thieu, ho chieu, hoc dieu
luc chung » luan chung, luat chung, luc phuong
cong than » cong thanh, cong tan, cong thai
nhan luc » nang luc
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) OR (hoc hien)) xanh - trinh nhan luc chung ((cong than) or (cong thang)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc hien)) xanh - trinh nhan luc chung ((cong than) OR (cong thang)) phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) OR (hoc hien)) xanh - trinh nhan luc chung ((cong than) or (cong thang)) phan dau".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) OR (hoc hien)) xanh - trinh nhan luc chung ((cong than) or (cong thang)) phan dau*.