Perhaps you should try some spelling variations:
chiet tach » chieu sach
trinh quan » tinh quang, trinh luat, trinh han
dung chung » dung cong, dung ung, dung trung
hoc chiet » hoc thiet, hoc nhiet, hoc hien
trinh cua » trinh luat, trinh luan, trinh chat
chung ban » chung bat, chung han, chung nhan
ban thanh » ban hanh, ban hang
thanh tap » thanh lap, thanh tai, thanh tay
tinh cua » sinh cua, tinh chat, tranh 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 chiet tach - hanh ((((trinh cua) OR (trinh quan))) or (tinh cua)) dung chung ban thanh tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - hanh ((((trinh cua) OR (trinh quan))) OR (tinh cua)) dung chung ban thanh tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chiet tach - hanh ((((trinh cua) OR (trinh quan))) or (tinh cua)) dung chung ban thanh tap*".