Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh toan » tinh toan, thanh toan, trinh han
nhung cong » thong cong, hang cong, nhung don
hoc thien » hoc hien, hoc thieu, hoc thiet
thien anh » thien danh, tien anh, thien thanh
dung cong » dung trong
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thien anh - hanh trinh toan ((nhung cong) OR (dung cong)) tan ((than cap) or (thanh san))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien anh - hanh trinh toan ((nhung cong) OR (dung cong)) tan ((than cap) OR (thanh san)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien anh - hanh trinh toan ((nhung cong) OR (dung cong)) tan ((than cap) or (thanh san))".
• Adding a wildcard symbol may retrieve word variants: hoc thien anh - hanh trinh toan ((nhung cong) OR (dung cong)) tan ((than cap) or (thanh san))*.