Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
hanh tang » hanh trang, anh tang, hanh mang
tang dung » tang duong, dang dung, tan dung
dung cong » dung trong
thong lap » thong cap, phong lap, thong lai
thong lam » thong nam, trong lam, thong xay
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) or (chiet tach)) - hanh tang dung cong ((thong lap) OR (thong lam)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chiet tach)) - hanh tang dung cong ((thong lap) OR (thong lam)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chiet tach)) - hanh tang dung cong ((thong lap) OR (thong lam)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chiet tach)) - hanh tang dung cong ((thong lap) OR (thong lam)) toan cao*.