Perhaps you should try some spelling variations:
cham xuc » chat xuc, cham soc, pham duc
tang lai » trang lai, tang tai, tang loi
van cua » vang cua, ban cua, dan cua
va luan » vay luan, van luan, va quan
hieu ve » hieu va, hieu van
lai hoi » dai hoi, lai hoa, lai roi
sach ty » sach y, sach tu, sach thu
sac ky » cac ky, sai ky
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sac ky) or (sach ty)) tang lai hoi. hieu ve ((cham xuc) OR (cam xuc)) va luan van cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sac ky) OR (sach ty)) tang lai hoi. hieu ve ((cham xuc) OR (cam xuc)) va luan van cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sac ky) or (sach ty)) tang lai hoi. hieu ve ((cham xuc) OR (cam xuc)) va luan van cua tu*".