Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
nganh cong » nhanh chong, thanh cong
cong thai » cong hai, hong thai, cong thanh
nha khong » nhan khong, nha khung, nha thong
khong khi » khong he
thu sach » thuoc sach, thu hoach, khau sach
tu sach » su sach, te sach, tu cach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ((thu sach) OR (thuat sach)) nganh cong thai đong luc ) or ( tu sach nha khong khi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((thu sach) OR (thuat sach)) nganh cong thai đong luc ) OR ( tu sach nha khong khi đong luc )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((thu sach) OR (thuat sach)) nganh cong thai đong luc ) or ( tu sach nha khong khi đong luc ))".
• Adding a wildcard symbol may retrieve word variants: (( ((thu sach) OR (thuat sach)) nganh cong thai đong luc ) or ( tu sach nha khong khi đong luc ))*.