Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thien » hoc hien, hoc thieu, hoc tien
hoc thiet » hoc thieu, hoc thuyet, hoc hien
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
thanh cac » hanh cac, thanh bac, thanh ca
cong dan » cong san, cong tan, huong dan
than cap » khan cap, thanh lap, than cua
tinh va » tich va, trinh van, trinh vat

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) or (hoc thiet)) danh - hanh tinh va nhung cong dan ((than cap) OR (thanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thien) OR (hoc thiet)) danh - hanh tinh va nhung cong dan ((than cap) OR (thanh cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thien) or (hoc thiet)) danh - hanh tinh va nhung cong dan ((than cap) OR (thanh cac))".
• Adding a wildcard symbol may retrieve word variants: ((hoc thien) or (hoc thiet)) danh - hanh tinh va nhung cong dan ((than cap) OR (thanh cac))*.