Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
trang va » tran van, hang va
cong dan » cong san, cong tan, huong dan
dan thai » dang thai, dan thi, dan than
thai cao » tai cao, thoai cac, thuat cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sach) or (((hieu qua) or (lieu va)))) - hanh trang va nhung cong dan thai cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (((hieu qua) OR (lieu va)))) - hanh trang va nhung cong dan thai cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (((hieu qua) or (lieu va)))) - hanh trang va nhung cong dan thai cao*.