Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc dieu
trinh va » trinh van, trinh vat, trinh ve
cong tac » cong ty
tac vang » cac van, tac dung, tac dong
vang ban » van ban, hang ban, nang ban

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 - hanh trinh va nhung cong tac vang ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) OR (hoc hien)) xanh - hanh trinh va nhung cong tac vang ban*".