Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hanh trang » thanh trung, canh tranh, minh trang
hanh trinh » canh tranh, hanh chinh
phung cong » phong cong, nhung chong, dung cong
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
luan chau » luan chat, chuan chau, luan chi

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 (hanh trinh)) va ((phung cong) OR (nhung cong)) quan luan chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - ((hanh trang) OR (hanh trinh)) va ((phung cong) OR (nhung cong)) quan luan chau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - ((hanh trang) or (hanh trinh)) va ((phung cong) OR (nhung cong)) quan luan chau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((hanh trang) or (hanh trinh)) va ((phung cong) OR (nhung cong)) quan luan chau*.