Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hieu thien » hieu hien, chieu chien, dieu khien
trinh van » trinh han, trinh quan, trinh toan
hach xuc » thach duc, hanh xu, cach xu
va trinh » van trinh, va tinh, lap trinh
sach ky » sach y, sach ty, sach kem
van phu » san phu, van phung, van phan
phu tre » phu tran, phu troi, thuc tre
sac ky » cac ky, sai ky
xuc va » duc va, tuc va, luc va
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) OR (sac ky)) nang x hoi. hieu thien hach xuc va trinh van phu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sac ky)) nang x hoi. hieu thien hach xuc va trinh van phu tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sac ky)) nang x hoi. hieu thien hach xuc va trinh van phu tre*.