Perhaps you should try some spelling variations:
chiet tach » chieu sach
thong cong » trong cong, tong cong, thong thong
trung cua » truong cua, trung tuan, trung cap
truong ca » truong cao, truong va, trong ca
ho chiet » ho chieu, ho thiet, hoc thiet
cong tan » cong tac, cong san, cong thanh
than tap » han tap, phan tap, than cap
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - hanh ((trung cua) or (truong ca)) thong cong tan ((than tap) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - hanh ((trung cua) OR (truong ca)) thong cong tan ((than tap) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - hanh ((trung cua) or (truong ca)) thong cong tan ((than tap) or (toan tap))*.