Perhaps you should try some spelling variations:
chat luoc » chat luong, chat hoc, chat xuc
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
tinh cuu » trinh cuu, dinh cuu, tinh cua
cuu tre » cua tre, cau tren, cau treo
ky dung » ly dung, ky dang, ky vung
va hanh » van hanh, va thanh, va danh
hieu va » lieu va
luoc va » nuoc va, duoc va, loc va
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
ha hoi » hoa hoi, ha noi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky dung ((ha hoi) or (hoa hoc)). ((hieu va) OR (hieu qua)) chat luoc va hanh tinh cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky dung ((ha hoi) OR (hoa hoc)). ((hieu va) OR (hieu qua)) chat luoc va hanh tinh cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky dung ((ha hoi) or (hoa hoc)). ((hieu va) OR (hieu qua)) chat luoc va hanh tinh cuu tre*".