Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hanh trang » thanh trung, hanh trinh, minh trang
thong tung » thong trung, thong dung, thong cung
hoc thieu » toc thieu, hoc hien
cua thong » cua thuong, cua khong, cua tong
tran manh » tran minh, tran thanh, tran van
tung dan » dung dan, huong dan, trung dai
than man » than ma, thanh san, than phan

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 - ((hanh trang) OR (canh tranh)) cua thong tung dan ((than man) or (tran manh))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - ((hanh trang) OR (canh tranh)) cua thong tung dan ((than man) OR (tran manh)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - ((hanh trang) OR (canh tranh)) cua thong tung dan ((than man) or (tran manh))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((hanh trang) OR (canh tranh)) cua thong tung dan ((than man) or (tran manh))*.