Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
lanh tranh » lan tranh, hanh trinh, sach tranh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
cong van » cong vang, cong san, song van
van chat » cao chat
chat hai » chat thai, chan hai, chat tai

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 - ((lanh tranh) OR (canh tranh)) va nhung cong van chat hai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - ((lanh tranh) OR (canh tranh)) va nhung cong van chat hai".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((lanh tranh) OR (canh tranh)) va nhung cong van chat hai*.