Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
nhung cong » dung cong, thong cong, hang cong
hoc thien » hoc hien, hoc thieu, hoc thiet
trinh cua » trinh luat, trinh quan, trinh luan
thanh lap » thanh san, phan lap, thanh hai
tinh cua » sinh cua, tinh chat, tranh cua
cong tac » cong ty
than cap » khan cap, thanh cac, than cua

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