Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
va trien » va truyen, va thiet, va tuyen
cham xuc » chat xuc, cham soc, pham duc
hang mai » hoang mai, hang tai, lang mai
thanh gi » thanh nghi, thanh gian, thanh hai
hang hai » hoang hai, hang tai, thanh hai
sach thu » sach thue, sach thieu, sach tham
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
gi va » bi va, gi la, gi ta

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach thu ((hang mai) or (hang hai)) hoi. hieu va ((cham xuc) OR (cam xuc)) ban thanh gi va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thu ((hang mai) OR (hang hai)) hoi. hieu va ((cham xuc) OR (cam xuc)) ban thanh gi va trien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thu ((hang mai) or (hang hai)) hoi. hieu va ((cham xuc) OR (cam xuc)) ban thanh gi va trien".
• Adding a wildcard symbol may retrieve word variants: su sach thu ((hang mai) or (hang hai)) hoi. hieu va ((cham xuc) OR (cam xuc)) ban thanh gi va trien*.